Human Body
Exploring "Why" questions about Human Body
481 articles
Why do we always think that dreams are real life despite them usually being obscure and unrealistic?
While dreaming, the part of your brain that determines if things are obscure and unrealistic is operating at a diminished capacity. In a sense, you are just not smart enough to realize there is anythi
Why is the majority of the human population right hand and right eye dominant?
So there is definitely a tendency towards right handedness in people, but I would also point out that right now, there is social pressure on that as well: many left-handed children born in the 90s wer
Why aren’t professional body builders who take steroids arrested?
To be arrested on any kind of a drug charge requires possession or buying/selling. The fact of having taken an illegal drug is not something a person can be arrested for.
Why do we die instantly when our heart stops? Why don’t we asphyxiate from lack of oxygen from blood no longer circulating?
You don't die instantly; people with a totally stopped heart often die, but it is possible if the heart resumes in a timely manner you'll survive. There's a distinction between alive and conscious, th
Why do some people like a certain taste/smell while others don’t like it (or even hate it)?
That's a product of education, upbringing, customs, flavors and food you are familiar with... Also perseverance. Have you hear that "tonic water is an acquired taste"?
Why does my body crave exercise even though I hate it when I’m actually doing it?
I believe the body releases hormones that make your physical well being better after exercise and thus not having those endorphins for a while will cause withdrawal like symptoms. They improve your mo
Why can’t we do brain transplants like other organs?
When we transplant other organs, we mainly have to reconnect tubes (blood vessels, intestine, etc.). If we were to replace the brain, we need to reconnect the nerves which we don't know how to do on s
Why don’t blood vessels sort of kink when we fold our knees/elbows?
1. The outside of each blood vessel is made of a material that has the right blend of firmness and flexibility. 2.
Why do some people fall asleep instantly, while it takes others hours to?
In order to go into sleep your brain activity has to slow, if you've got too many thoughts going on, keep opening your eyes, moving, etc, you're sending conflicting signals to your brain. Your brain w
why does it take so long (years even) to get a citizenship in a foreign country?
Because those countries want to limit the number of people who get the benefits of full citizenship. Making it take longer means taht fewer people will go through the process and the ones who do will