Human Body
Exploring "Why" questions about Human Body
481 articles
Why is sleep so comfortable shortly upon waking(especially when you have work/school/etc)?
When you wake up in the morning, you get something called sleep inertia. It's the groggyness you feel up to two hours (usually half an hour) after you have woken up. It's a "false" kind of sleepy, whi
Why do certain vibrant colours make your eyes hurt when looking at them?
Ever since the blue LED x-mas lights came out I have called them "hurtyoureyes" blue. I wouldn't even mind a ELI25 as to why they are so vibrant.
Why do I wake up tired after I’ve slept in?
If you wake up during the wrong stage of sleep you can feel extremely tired. This is why if you get up after your body wakes up normally you usually don't feel too exhasted, but getting woken up from
Why are the tips of our fingernails white?
I'm sure you've heard about [tape over frosted glass](_URL_0_) trick right? Your nail is actually rough on the underside, especially with bits of dead skin still attached. The part of your nail that d
Why do our tastes change over time?
Very likely our tastes change for the same reason everything else about us changes: We grow, we have new experiences, we learn new things. Most of the cells in our bodies are less than seven years old
why do we gag when we smell or see something gross?
A wise man once told me, "You know what the difference is between smelling shit and eating shit? Parts per million."
Why is it a bad idea to put dental glue for braces all over your teeth to prevent damage or for less maintenance?
It's easier and less expensive to just brush and floss, but even if you could encase your teeth in a protective shell, you would still need to brush and floss to protect your gums from disease. People
Why do most bigger men, i.e. bodybuilders, have deeper voices?
They don't. There's no correlation between the size of a person and the size of their vocal chords, which is what determines vocal pitch and timbre.
Why don’t we sneeze when we’re asleep?
A simple google search will show "We're actually more prone to sneezing while asleep, since the mucous membranes swell when we lie down, but because there usually isn't much airflow or movement to sti
why popular american fast food and snack brands are found nearly all over the world but we never see any popular foreign fast food and snack brands here?
You may not be aware that some snack brands are foreign because you grew up with them. For instance, Nestle' is a Swiss company that licenses the Kit Kat bar, invented in England, to the Hershey compa