As an example of how this works, where most of us may look at a rainbow and see seven colors, a lucky lady with that fourth receptor will actually be able to make out 10. An even smaller number of women end up with 5 color receptors!
You just tried to do it, didn’t you? The reason for this is that humans’ voice boxes are unusually low in their throats compared to other animals. In turn, this allows our voices to resonate much more, which allows for us to produce such a wide variety of sounds!
Don’t go outside without sunscreen! You’ve probably heard people tell you this all your life, but this is just another reason you should really listen to them. Your body might still be recovering from that bad burn you got last summer when next summer rolls around!
Ever wondered why old socks smell so much worse than any of your other sweaty clothes? Just remember to scrub your feet extra well next time you take a shower, alright?
It’s like every time you sneeze, you’re shooting an MLB-quality fastball out of your mouth! Also, this is where we make the customary request for you to PLEASE not try to open your eyes while sneezing.
This fact brought to you by a 10-year study in Scotland, finding that 20% of all heart attacks happen on Mondays. It could be due to drinking, or the unhappiness of going back to work, or the stress of going back to work. In any case, always make sure your lifestyle is healthy for you!
If you’ve ever wondered why obesity and heart disease are connected, now you know at least one of the reasons. Just another thing to motivate all of us to eat healthy!
To give you a clue, this essentially means that humans eat the equivalent of one humpback whale worth of food during the course of their lives. Which does not mean you should go hunting whales in the hopes of having a lifetime supply of food. Pretty sure the whale will go bad before too long.
Think of how tough the lining of your stomach must be, then! Note: We do not encourage anyone reading this to try swallowing razor blades, and in fact would request that you avoid doing so.
That comes out to 60,000 miles, just so you know! Though why anyone would ever actually want to do something like this is beyond us. It’s just creepy.
Why is this? In order to more efficiently oxygenate the blood, the lung’s surface area needs to be maximized so that it can accommodate as many blood vessels as possible. Must be wrapped pretty tight in there!
It doesn’t matter how well-moisturized your skin is, your skin is constantly dying off and regenerating itself. It’s a normal part of keeping you alive, so don’t worry!
Smells are a pretty complicated and nuanced thing, as they can be decided by a mix of genetics, hygiene, and diet, among other variables. In case you’re wondering, yes; identical twins tend to smell almost identical to one another as well!
The current estimate for memory capacity comes out to somewhere between 5 and 1000 terabytes of storage, which is absolutely incredible. Next time you complain that you don’t have any more space in your brain while studying, remember this fact!
Just think about this one while looking at yourself in the mirror every morning! You might look the same and feel the same, but on a molecular level you are almost a completely different person than you were a year ago!