Just like that expensive tablet you bought exclusively to browse Facebook, or that fancy wrist computer that you've never used to check the time, the human body has all sorts of extra features most people will never know about. We think some of those features are way too cool to be ignored, though, so consider this article your body's long-lost instruction manual.
6You Can "See" Your Hands In The Dark
For our first trick, we're going to need you to cover your eyes for a second. What we'll attempt to prove is that ... you ... you're not reading this, are you? Shit. Let's start over.
OK, according to this study by the University of Rochester, if you put on a blindfold or go to a place that's completely dark (maybe your workplace has a "make-out" closet?), then wave your hands in front of your face, about half of you should see something like this:
University Of Rochester
But without the letters, presumably.
No, you don't have radioactive hands -- what's happening, the researchers say, is that a big part of what we see every day comes not from our eyes, but from what our brain expects to see based on other sensory information. Ah, so you're just imagining those hand movements, right? Not really: For the experiment, participants were put in a completely dark room with sensors that kept track of their eye movements. It turns out that when you move your hands in the dark, your eyes move exactly the same way they would if you could actually see them. Your sense of sight may be slacking off right now, but you're still getting signals from other parts of your body, which "create real visual perceptions in the brain." In simpler terms, you're fucking Daredevil.
But you keep stumbling into furniture at night because you're also fucking clumsy.
And if whoever threw you in a dark room also tied your hands, you can always use your nose to navigate. In an unrelated experiment, blindfolded people were able to find their way back to a specific place in a room by using only smelly sponges as reference. This is called using our "smellscapes" (we tragically wasted the term "smell-o-vision" long ago), which are maps we create in our heads by noticing the differences in how each place smells. Rats and pigeons do this all the time -- we just haven't had the chance to exercise this particular ability, is all. Should you ever find yourself in a blackout with two friends who had Mexican food, though, then definitely give this a shot.
5You Can Hear The Difference Between Hot And Cold Water
Unless it's hot enough to sizzle or cold enough to turn your urine into icicles before it even hits the toilet, you wouldn't think water temperature is something you can hear. And yet, listen to this short clip of a glass of water being poured:
Or maybe someone peeing, now that we put that idea into your head.
Is that hot or cold? How about this other one?
"We've secretly replaced their tap water with room-temp Coors Lite. Let's see if they notice the difference."
If you're like 96 percent of the people tested in an experiment by Condiment Junkie, a British branding company, then you probably guessed right: Glass One is cold, Glass Two is hot. Which begs the question: What the hell? Did 96 percent of us get sent on a rocket from another planet as babies and develop the most useless superpower ever?
Actually, the British advertisers/researchers who conducted the experiment explain that we're hearing the minute differences in molecular speeds; cold water has slower molecules and is therefore more viscous than hot water, which in turn is less dense. You may not consciously say, "Oh, yeah, those are some tight-ass molecules right there," but your brain is smarter than you and keeps track of these things. For some reason.
Your brain still thinks it's the sixth grade and you could get quizzed about this crap any moment.
In addition, hot water tends to have more bubbling, and bubbling noises tend to happen at a higher frequency. This is also why the sound of a shower running seems to change as the water heats up, as you can verify right now by looking at the bizarre amount of multihour "shower sounds" videos on YouTube.
Or we guess you can just check your own shower if you have one, Mr. Fancy Pants.
And speaking of showers, or the lack thereof ...