Human Body
Exploring "Why" questions about Human Body
481 articles
Why are some people more likely to have sleep paralysis, while others never have it or have only experienced it once?
Everyone or, at least, most people are capable of having sleep paralysis. Its nothing special as far as chemical imbalance go or something in genes or dealing with immune (it's been noted to be a comm
Why do we get hiccups? How to make it go?
One method i learned from Reddit. just as you get your 1st hiccup, take a long deep breath and hold it as long you can.. hiccups gone!
Why do tractor trailers need so many gears?
Just to allow them to tug more weight. You would need an insane amount of power to tow those trailers if you only had say 5 gears. Either you wouldn't have enough power, or your top speed would be ver
Why do I feel like I haven’t really slept if I have vivid dreams during the night?
It's not that the vivid dreams make you tired, it's the fact that you are waking up during a dream - waking out of REM sleep tends to leave you a bit groggy. Most of the dreams during the night you do
Why can’t people who have had cancer in the past donate blood?
Some cancers (like leukemia) go into remission. Other cancers (like melanoma) don’t go into remission; patients are considered “NED” meaning no evidence of disease. Doctors don’t see any cancer but it
Why does my nose get runny when I eat/drink something hot.
Spicy foods irritate the mucus membranes in your head and lungs. Your body reacts to this by making you create mucus, to coat and protect you from whatever may be causing the irritation. You also tear
Why is it some learn faster than others by reading?
some people take in things better when they read, others when they hear it, yet others when they participate in it actively somehow. it's different for everyone. most people are a combination of all o
Why haven’t animals learnt to stay the fuck away from humans considering how often we kill them?
Those animal populations that are actively hunted do. You can tell this easily by observing deer. Deer who live in an area long enough learn when hunting season is and are much more skittish during th
Why do we sometimes flinch in our sleep?
If im reading the question right and you are talking about that jerk right before you fall asleep. The theory behind it is that it's a basic instinct that we learned when were we less evolved than we
Why do people have to swear under oath? If they’re willing to lie, they’ll do it with or without the oath.
If you lie while under oath, you're guilty of [perjury](_URL_0_), which is a felony in the United states, punishable by up to 5 years in prison. If you lie in your day-to-day life, you're just an assh