Fear of Heights: It’s Partly Biology 


You could say I’m terrified of heights, but they’re just the delivery system. What I really fear is the rapid, involuntary reunion with the ground. 

I’ve tried multiple variations of that unfunny joke through the years, because I want something to say when the questions, the teasing, and the antagonism starts. The best thing to say in these moments is something, because I’ve tried saying nothing, and it doesn’t work. I also need answers to the internal dilemma I experience when I encounter those who fear just about everything but heights. Whats different about me? If I had an actual phobia, an acrophobia, I wouldn’t be able to climb ladders, go on roller coasters, or zipline through a forest. I found an answer that states that I’m not in the five to ten percent of those who suffer from some form of acrophobia, but I fit within a broader, non-phobic category of twenty-eight percent who suffer from something called a visual height intolerance (VHI). This isn’t the answer I was searching for, but it is an answer.  

Even with that answer, those of us who suffer from VHI don’t understand why we have an irrational, emotional reaction to heights that frail, little old ladies and young teenagers don’t. It makes no sense to us that we struggle to stand atop a twenty-foot ladder and jump into a thirty-foot void tied to a zipline, and other people don’t. 

As our group of eleven made our way through the various ziplines, we got to know one another in superficial ways, and we learned that some of us are doofuses, but even our doofus demographic weren’t as scared as I was. They were having fun. I wanted to believe they were too dumb to know how much danger they were in, but when the people who were more intelligent than me screamed with glee on their turn, the only answer left for me was that I was a fraidycat.  

If you’re an awful, offensive person, you probably attract offensively awful people as friends, and if you don’t have answers for them, they’ll hit you with every mean-spirited, funny joke they know. I also have nice friends, but their sad, sympathetic looks hit deeper than my friends’ jokes, and I tell unfunny jokes to keep those looks off me. No matter which side of the fence they’re on, I suspect that most people enjoy tasting another’s vulnerability so much that they can’t hide their sympathetic, concerned smiles. I know this because thats how I react to their vulnerabilities.  

“You didn’t like the zipline? Because I thought it was fun!” they say. It’s humbling, embarrassing, and frustrating to be this scared of something that people who make no sense enjoy. We can drop our “C’mons!” on them, but after we algorithm their answers, we find that they genuinely enjoy ziplining. I realize I have no answers for that, other than I’m just scared. I’m scared of something that frail, little old women and teenagers aren’t. The idea that the zipline experience didn’t rattle the teenagers, in particular, really got to me, because I was the one who helped them get over their irrational fears. “Monsters don’t exist,” “Most bugs aren’t as big as your fingernail,” and “You can take control of your nightmares in a way that will prevent them from being as scary.” I taught them that if they are able to rationalize the irrational, they might not fear it as much. I helped them conquer their worst fears in life, and theyre the ones now giving me sympathetic, concerned smiles

One of the answers I have for why I fear ziplining so much is that the plot of most of the nightmares I’ve had since I was a little kid involved being high up on something, looking down, then falling off (or stepping off) a platform into nothingness. We now call this ziplining.   

I did it though! Before we continue, I want it noted that I managed to separate myself from what researchers call a clinical case of acrophobia to one who suffers from what they call a visual height intolerance (VHI). Those with a clinical case, the roughly five to ten percent, would’ve never been able to step off that platform into nothingness secured to nothing more than a line with three reinforced nylon ropes. I did it. I braved my worst fears, and I tweaked those (to me, crippling) fears by ziplining through a forest. I jumped off five different ledges and zoomed 30 feet above the ground from tree to tree. It was one of the greatest accomplishments of my life, and that’s not hyperbole for me. I know that’s sad, but it’s sad but true.

Now, how many of my most beloved and loyal members of my friends and family do you think joined me in the celebration of my accomplishment of conquering what I considered the most terrifying experiences of my life? If you guessed zero, you are correct. I didn’t really need anyone to congratulate me, because when I finally touched ground, I experienced what Irvine Welsh wrote about in his 1993 novel Trainspotting “doing heroine [is] like having 10,000 orgasms at once”, except I would replace “doing heroine” with ziplining. I didn’t need anyone to intensify my reaction to completing the course, in other words, but when they asked me: “Are you going to do it again?” my disgust broke out: 

“Who gives a crap! Right now?” I said. “We’re not even a minute away from me conquering my greatest fear in life, and you’re asking me if I’m going to do it again? Why don’t we take a minute to celebrate what I just did.”  

I enjoy being human don’t get me wrong, and I’m not going to switch species based on one petty grievance, but why do we insist on asking someone if they have the skill, temerity, and resolve to accomplish something great, momentous, and unprecedented again? Why do we insist on doing it right after they did it? They don’t let us savor our accomplishment for one minute. When we graduate high school, which was an incredibly arduous accomplishment for me, the first question was, “So, where are you going to college?” When we receive a promotion, they ask, “Is this a stepping stone, or are you going to fly higher?” Who gives a crap about that now, right now? Right now, I think you should say, “‘Holy Larry!’ You did it!” The key to my frustration, if you haven’t guessed is the “right now” portion of this ubiquitous exercise, the present tense, as in just minutes away from our grand accomplishment. We can get around to all the other stuff when we get around to it, but for now, help me celebrate this accomplishment.   

In the history of Super Bowls, there have been a little over 3,000 NFL players who have reached the pinnacle of winning a ring. As evidenced by the idiotic and obnoxious sideline reporters, we don’t want to let those elite athletes celebrate their enormous accomplishment for five minutes, as these reporters ask the star of the game, immediately after the game, ‘Do you think you can do it again next year?’ The player responds, “I’m just going to celebrate this one for a while.” Rather than focus on the incredible athletic achievement these fifty-three players, coaches, and the team’s hierarchy just accomplished, we want to know if they think they’re going to be able to win it all again next year. I want one of these players to look at these reporters with disgust and say, “Do you want to know what it took from us to get to this point? Do you have any idea what it takes to win what might be the most difficult and prestigious trophies in our country? Do you want to know anything about the sacrifices the fifty-three players on our roster made to make this happen?” I want this NFL player to add, “All those hours you spent watching Netflix, going to parties, and sitting around watching sunsets, I was in the weight room, in dark film rooms, and in grueling two-a-days, and doing it over and over again all year, and that’s not even accounting for everything we did in past years to get to this point. We haven’t had a drop of alcohol or smoked anything all year. I haven’t had a slice of cheese in three years. And we did it all for this moment, so could you, maybe, just give me a moment to celebrate what it took me and only about 3,000 other men to accomplish in life?” 

I understand that some anonymous boob ziplining 30 feet off the ground doesn’t even come close to winning a Super Bowl, but conquering my crippling fear felt just as momentous in the moment. When I reached the final platform, and it was over, truly over, I felt an adrenaline rush that informed me that I could do anything I wanted to in life. When that adrenaline washed out of my system, I softened my stance a little, because I realized that my friends and family couldn’t understand how huge that moment was for me, but I added that it would’ve been nice if they asked me to try to explain it to them before asking me if I was brave enough to do it again.    

I’ll admit that I likely won’t do what was one of the most terrifying experiences of my life ever again (insert your small smile of schadenfreude and sympathy here), but why does that matter? Correction, maybe it should matter at some point in the future, let’s say the one or two years from now when we talk about ziplining again. For now though, right now, let’s just let me celebrate my crowning achievement for a moment. Let’s just take a second and realize how hard this was for me, and let’s celebrate the fact that I did it all with a dry throat and quivering legs.  

When they ask, “Are you going to do it again?” they usually follow our ‘no!’ with, “Really? Because I didn’t think it was that big of a big deal. It was 30 feet off the ground. That’s considered a minor to low-medium elevation zipline experience.”  

Our ziplining experience was probably equivalent to a kiddie slope in skiing, and all people and companies that offer ziplining experiences know to go over the top with safety measures to make sure their customer base feels secure. This involves being secured in at three different points and various other procedures the employees require their customers to go through. Our lives were never on the line, in other words, but that’s all rational and reasonable. Those who suffer visual height intolerance (VHI) and a clinical case of acrophobia know that a fear of heights is irrational, unreasonable, emotional, and now we know that it’s partly psychological too.  

If you missed the key word of that last sentence, go back and reread it and focus on the third to last word of that last sentence partly, for therein lies an answer.  

The research states that the majority of my fear of heights is mental/ psychological, but there are physical elements involved too. That’s right, I found an answer to why some frail, little old ladies who fear things that go bump in the night, and teenagers who still have some remnants of fear of the boogieman haunting their dreams don’t experience crippling fear on a zipline’s platform, and I do. If you’re an acrophobic or one who suffers from VHI, and you don’t have an answer, you might not consider this a quality answer, but I’m okay with that, because like fear in general, the quality of answers are relative to the person.  

Research has concluded that some brains are just different. That’s not a mind-blowing revelation, I know, but it opens up the idea that some brains, be they in the little old lady or teen demographic, adjust well to heights. Others don’t, and the fear that others experience might feel psychological, but its roots are partly physical too — and those roots vary from person to person. At certain heights, an individual’s balance system, their proprioception, or equilibrium, becomes less stable.  

The sensorymotor system (vision, vestibular organs, proprioception) of the acrophobic and VHI sufferer generates stronger instability signals at heights. The brain’s balance system—its ability to sense its position, movement, and force without relying on visual input, enabling balance coordination, and precise motor control—becomes less stable at varying heights. Some brains interpret that instability as danger; others don’t. It all depends on which side of that divide you fall. When visual cues are far away, those with a condition can’t use them to stabilize posture, so sway increases. Some people’s brains treat that sway as a threat, triggering fear. Others feel the same physical shift but don’t interpret it as danger. Put simply, some brains handle visual–vestibular mismatches smoothly; others become unstable and anxious. If the acrophobic and VHI person experienced frightening experiences, or they dreamt them up, they may have incidentally linked instability with danger. Others don’t make the same associations. The individual who doesn’t fear heights isn’t braver or made of a stronger constitution, their body just doesn’t send “danger” signals at heights, and their brain won’t amplify those signals.

We do it to ourselves, in other words. Some of us may have experienced real life incidents that forever shaped our reaction to heights, but most of us train our overly creative brain to react to heights in such a manner. If we have always imagined the worst, and/or experienced decades of nightmares where heights played a main character, our trained brain will not handle vestibular mismatches smoothly, and our body won’t stabilize posture very well when visual cues are so far away. As I wrote, sufferers might not consider that answer an epiphany, and it might not prevent the pack of wolves, we call friends, from whipping out their measuring sticks to prove superiority, but it is an answer.  

It’s also an adequate answer to the question, “If you received such an adrenaline rush from tweaking your fear, why wouldn’t you want to do it again?” Adrenaline rushes are short term fixes. They’re not the answer, as we will be just as afraid next time as we were this time, because the portion of our brain that regulates proprioception, or equilibrium, when we’re high up is still going to be a little off.  

My final word to those who suffer from these varying levels of fear when they’re high up is, there is something wrong with you, but it’s not what you think. You’re not a coward, a fraidycat, or a wimp. Your brain is just a little tiny bit off, and in the grand list of physical, psychological, and mental disorders this might be the one everyone would pick if they were forced to pick one at birth.

So, the next time someone calls you chicken, a wuss, or a fraidycat, you can now say, “Well, it’s partly that, but it also has something to do with my overly active sensory-motor system cranking out premium-grade instability signals the moment I achieve altitude. My brain simply refuses to handle visual-vestibular mismatches with any dignity whatsoever.

“And yes, it’s mildly embarrassing, as I’ve never actually plummeted from anything noteworthy. After mining the scientific research put into the study of me and my 22-28% brethren, the best answer I found is that I did this to myself. My overly creative brain has changed me into a certified neural drama queen who instantly routes even ‘minor sway’ into the ‘instability equals instant doom’ shortcut anytime I achieve at least twenty feet of altitude.

“You, on the other hand, haven’t trained your brain to broadcast or amplify overly theatrical danger signals. Congratulations, you calm biological member of the majority, but you’re not necessarily braver or composed of a stronger constitution, your hardware just isn’t quite as hysterically talented as mine.”

I’m not afraid of spiders, snakes, enclosed spaces, injections, germs, thunder and lightning, dogs, flying, or flying dogs, but I do have one highly irrational and emotional fear related to my visual‑vestibular conflict. When I started my research, I wanted to find that we have some gene variant or some sort of genetic clue involving the inner ear that helps us regulate balance. I wanted to be able to say that my condition was directly related to genetics, so I could blame someone or something else. The best answer I found is that modern scientific research finds that my system is likely over‑responsive to height‑related visual‑vestibular mismatch — something that can be influenced by genetics, but also by experience, conditioning, and neural wiring. I wanted something I could drop on my family members and obnoxious friends, but there’s no conclusive, proven casual links. I wanted to find satisfying clarity, but every study kept coming back to the idea that an overwhelming majority of my problem is all my fault, and the same level of creativity I use to write on this site is the culprit fueling my greatest fear. It’s an answer, but it’s not a very satisfying one.

Camping or Vamping?


“There are no words that can tell the hidden spirit of the wilderness, that can reveal its mystery, its melancholy, and its charm.” –Theodore Roosevelt African Game Trails, 1910  

I came up with a word: boring.

When we say something like that, adventure-seekers and wildlife enthusiasts have two words to describe us: city slickers. That’s not good-natured ribbing either. It’s a harsh condemnation as far as they’re concerned, and we can feel their intent soon after they say it. We could try to defend ourselves, but what’s the point? It’s true. We are city slickers who prefer the creature comforts of city-life and technology, and we know it has probably made us all soft and gooey from the inside and out, but we can’t admit that. We have to pretend we’re strong, rugged individualists who could survive in the wild with nothing but a blade and a canteen, because we feel guilty for living the easy life, and we’re a little jealous of the experiences that hardened these outdoorsmen. Are they true survivalists though? Do they know enough to know what they’re supposed to know, or are they just making it up as they go along? Could they compete with a Theodore Roosevelt in the wild, in the harsh conditions he probably experienced, or are they a hybrid between those who are accustomed to modern conveniences and technology combined with our modern definition of the rustic, rugged life? Are they experienced campers or vampers? 

We all heed the call of the wild, and the need to step away from convenience and comfort to escape civilization and embrace our untamed/wild instincts to let our primal nature hang out for all to see. We know it’s just good for the soul to have experiences that teach us more about ourselves. “You’ll never know who you are, who you truly are, until you’re backed into a corner.” And that sounds so romantic that if we brought it up in front of a group, almost all hands would go flying up from those who want to join us on our planned expedition. Some hands will even turn into fists, as they shout, “Yeah, gimme some a that!” But the minute we start darkening spots on a calendar, those hands, smiles, and eyebrows all go down. “Something tells me I’m going to be busy.” 

The concepts behind achieving a true Theodore Roosevelt spirit, seeking adventure and meaning in nature is such a romantic notion that city-slickers can’t but help but want some of that for themselves for at least one weekend, but we always fail. “It doesn’t matter that you fail, because everyone fails at something or another in life. It’s what you do after failure that defines you.” We love that, all of it, but if we’re going to be honest with ourselves, our failure to become this generation’s Theodore Roosevelt will never bother us so much that we’re going to do whatever it takes to make it happen. 

Da Mudder Humper

We know mudder nature offers great solitude and beauty to the unsuspecting and suspecting, but how long how long we’re supposed to stand at the bottom of a mountain before it happens? How long does one quietly stand at the bottom of a mountain before we make a connection to its height and vastnessnot just physically, but emotionally and spiritually? I’ve tried to experience it, but someone always interrupts me with, “Ok, are you ready?”  

“No, I’m not ready.” I say with indignation. “Hold on for a second.” This interrupter wanted to checkout prematurely, or what we considered a premature checkout, and we weren’t even halfway done, because we thought were close. “We drove all this way to see this mudder humper. Why don’t you go ahead and give me a second to appreciate her.” And we said that with solid conviction, but we didn’t really know how long we needed to convince them, or ourselves, that the very large mound of dirt and rocks inspired feelings of grandeur and timelessness within us to the point that we made that connection.

We don’t want to be a modern who looks at a mountain of breath-taking glory for twenty-two seconds and checks out and moved on. We want to feel, just for a moment, what our forebears must have experienced when they looked upon this mountain. We all think that the man of yesteryear was more in touch with nature than we are, because we’ve been too modernized. There is truth to that, of course, but did they appreciate the wonder of natural landmarks as much or more than we did? My guess is they didn’t view a mountain range as a breathtaking wonder in the manner we do, but as a pain in the ass that they were either going to cross or navigate around on foot or by horse-drawn carriage. 

***

Spotting nature’s finest critters in their environment, doing what they do, can also be awe-inspiring, but how often do we actually see them in the wild? “The one thing we know about nature with absolute certainty is that it’s unpredictable and unreliable,” a tour guide informed us when we didn’t see a single creature on our tour. If we’re lucky enough to actually see a wild animal in their environs, doing what they do, how many of those moments are inspiring or exciting. Most creatures of wild seem to spend about 75% of their time sleeping, 10% hiding from predators, and the rest of their time actively searching for food, eating that food, and sitting on their can doing nothing. If you’re lucky enough to see them during the percentage of the 15% of their time actively searching then you’re one of the lucky few. I’ve never been that lucky. 

When we see these incredible beasts in a zoo, we immediately think about how awful it is that they have to spend their existence in a caged environment, but if you’ve ever actually seen one of them in the wild, you know caged animals really aren’t missing that much. The wild ones live lives a lot more boring than most of us know. Their whole lives are about eating whatever they can find, sleeping about 15-20 hours a day, and occasionally finding someone to procreate with to extend the species. The caged animal not only sleeps the same amount of time, but they get free, non-taxing delivery of food, and they also have procreation partners delivered to them. The two things zoo patrons might characterize as the primary deprivations of the wild animal is mental engagement and physical exercise, which I think most wild animals would characterize as overrated. Our tour guide basically bolstered my characterizations when she informed us that one of the only ways they can get the wild animals out of their homes is by providing them salt licks, and they conveniently put them in areas where tourists can spot them. Yet, this only increases the chance that an animal will leave their home. It guarantees nothing. 

As a person who is more accustomed to seeing wild animals in action, it’s disappointing to see them do nothing but pant in bask of a sunrise. It’s a pretty decent picture, don’t get me wrong, but at some point you wouldn’t mind seeing what happens after a park ranger sets a mechanical rabbit loose, like they do at the dog tracks to set them in motion. If we got lucky enough to see them hunt or a fight LIVE! and IN ACTION!, and we see them ripping each other apart, we probably wouldn’t want to stick around long enough to see the unsanitary ways they rip entrails out of the loser’s anatomy. We prefer the packages our nature shows put together with their motion-sensitive cameras in the wild, and most of us can’t even last a full show, so we go to YouTube to watch the highlight reels. “It’s not the same,” the nature enthusiast will counter.

“It’s not,” we admit, “but I’ve spent some time in the wild, and I’ve seen these creatures in their habitat, doing what they do, and they’re so boring for such long stretches of time that my embarrassing reflex is to reach for the remote.”  

*** 

I don’t know if I loved camping in the outdoors (on a protected reserve) when I was a kid, or if I just remember my own highlight package, but I had a love/hate relationship with the wild. Back then, I feared, hated, and loved her dark, wooded regions. The creatures I imagined therein were not all earthly either. I had a vivid imagination, and I imagined that everything outside the campfire light was mysterious, had hidden spirits, and its own relative charm. Now that my imagination has lost some of its vividness, I know I likely would’ve found nothing if I dared venture beyond the campfire light into those dark, foreboding regions. And if I ever had the misfortune of running into one of the most fearsome beasts imaginable in that darkness, my guess is that they’d probably be more scared of me than I am of them, or asleep. I would never tell younger me any of that though, because I know those fears added to the charm of those camping trips, and I still feel that every time I smell burning wood.

When we get older, but not so old that we lose our imagination, we try to recapture the magical charm camping once held for us. The problem is that our parents handled most of the particulars of camping when we were very young, so we needed to find a friend who was a more experienced camper. We searched for that fella or female who knew how to help us, and when we finally found him, we found that the biggest difference between an experienced camper and an inexperienced one is mostly about the tent. Our experienced camper put up quite a few tents in his day, but he wouldn’t put our tent up for us. He didn’t want to deprive us of the sacred rite of passage involved in putting up a first tent, which was the whole reason we invited him to our camping expedition. When we were done, he laughed at us, and he pulled the stakes out another half-inch. “That’s it,” we asked ourselves. “That’s the difference between an experienced camper and an inexperienced one?”

No, that’s not it, he brought a flashlight. “You forgot a flashlight?” he asked with disgust. “You, my friends, are inexperienced campers,” he said. We felt insecure about our lack of knowledge, and we felt some shame for being so unprepared. Feelings of shame are usually followed by some form of rebellion, and we felt that bubbling to the surface, but our experienced camper was not very attractive, he was out of shape, and he was a subpar employee in our company who didn’t have many friends, so we let him wallow in his camping superiorities.

Once we managed to get past the tent and supplies portion of the camping routine, we all decided to go fish. Our experienced camper was also an experienced fisherman, and he did not appreciate us doing the only thing inexperienced fisherman love about fishing: casting. We were casting for distance, and we were casting to break up the boredom of fishing. We also reasoned that because the lake was full of moss and weedy, frequent casting kept it more debris-free. Plus, we didn’t want the fish nibbling our nightcrawler off the line. “What are you doing?” he whispered at us in disgust. “You should be recasting 5-7 minutes apart at the very least.” When we asked him why, our question was a respectful one that ceded to his authority. He explained his rationale, and it was a rather generic answer that involved the frequency of the recast depending on the bait type, water conditions, and target species. When we attempted to explore with more specifics, he tried to answer, but his answers didn’t satisfy us, so we kept asking. “Stop talking,” he spat in whisper, “you’re scaring the fish away.” We respectfully waited beyond reason to speak again, and when we did, he repeated: “Stop talking, you’re scaring the fish away.” We tried to display respect, through more silence, but when we got too bored and tried whispering things to him, he moved to the other side of the lake. Our takeaway was that while camping is boring, but fishing is mind-numbing.

When we extinguished our campfire at the end of the night, our experienced camper brought out an inflatable mattress, which we considered a cardinal sin of the camping world, until he followed that with a Flextailgear Max Pump Three that promised to “inflate the standard inflatable mattress in under two minutes with a 5,000 Pascal pressure rating and a built-in camping light.” We read that off the box to our experienced camper and asked him what his patron saint of outdoorsiness, Theodore Roosevelt, would think of an inflatable mattress with a Flextailgear Max Pump Three. 

“I don’t care,” he said. “There’s no way I’m sleeping on that cold hard ground.”

It’s not for me, but I respect anyone and everyone who tries to “ruff it” in the wild, but what does “ruffing it” mean? It’s relative to the person of course, but we all know that minor level of sensory deprivation nature provides can yield a certain sense of peacefulness, as we attempt to connect with nature and ourselves. It’s a momentary escape from the distractions we so enjoy. Once we’re done with that relatively quiet walk through a trail in a wooded region, we ask ourselves what’s the difference between a true outdoorsman, an adventure seeker, an experienced camper, and someone who never travels outside the city? Our guide, teacher, experienced camper or vamper, knew his stuff, but how much stuff is there to know when we go out camping? He improved the taughtness of our tent by moving it about a half-inch, he remembered a flashlight, and he knew enough not to talk while fishing, but he also brought modern conveniences that would’ve made the experienced outdoorsman of yesteryear groan. He didn’t help us renew our appreciation of anything, unless we’re talking about our renewed appreciation for the controlled climate an HVAC can provide, the appliances that provide convenience and comfort, and our devices. When we’re nestled back in our comfortable homes, we appreciate not being smashed into by bugs, as when they see a campfire light, they think it’s a moon, they fly kamikaze-style into it. The june bugs, in particular, don’t seem to care that something as big as a human face stands between them and the light. When we’re in the comfy confines of our home, we also know that nothing is going to stick its disgusting, grimy little proboscis in us to suck blood out of our system. More than anything else, our camping trip gave us a renewed appreciation of our sense of home. Theodore Roosevelt would not have approved of any of this, but the only word we could find to describe “hidden spirit of the wilderness, that can reveal its mystery, its melancholy, and its charm” was boring, and hot and sticky, oh! and the two words ‘never again,’ sorry, Teddy.