Human Body
Exploring "Why" questions about Human Body
481 articles
Why don’t bugs bleed red when they explode on my windshield?
Bugs don't have blood. Bugs have hemolymph. Hemolymph serves as both blood and the other fluid that surrounds cells in our bodies.
Why is a baby not nine months old when its born?
Because it's called a "birth"day - we define your age as being measured by your date of birth. We do that because it's easier to know for sure the day that the baby came out of the mom than the day th
Why do people listen to music with earbuds in while driving a vehicle that most likely has a stereo in it?
They could be listening to music from an audio player which can't connect to the car stereo (for example if the car doesn't have an aux input). Or they could just be using their headphones to talk to
Why do they say to “breathe in through your nose and out through your mouth” when exercising?
When you breathe in through your nose you're filtering the air before it goes into your lungs, and pulling it through a smaller opening, forcing you to inhale slower taking deeper breaths. You exhale
Why do pain killers like tylenol or paracetamol make flu shots less effective?
Paracetamol works by stopping your body from making chemicals that naturally increase blood flow by dilating blood vessels. When you get a big bruise that's swollen, these drugs reduce the blood flow
Why does it take a long time for human babies to stand up/crawl but other mammals can stand almost immediately after birth?
The scientific consensus is that humans are birthed early in development as compared to many other mammals as a consequence of our large heads (large brains). So a human baby is much less able to care
Why I can’t hear the American accents from movies and TV series, but can clearly hear it in real life.
Not sure what you mean, there are various American accents as well that are portrayed in movies. A guy from Texas isn't going to speak the same way as a guy from New York, and a guy from New York does
Why does the human eye see more shades of green than any other colour?
this is due to the Spectral sensitivity of the eye it perceve a larger intencity of green and red light than it does for blue, the eye has 3 type of colour receptors called cones and rods that are ass
Why are bodybuilders more ripped than powerlifters?
Lifters build up their body to lift. Bodybuilders build up their body to look ripped.
Why does climbing a tree, or a ladder, or any steep height seem fine going up, but much more scary coming down?
* you can see where you are going and what you are doing better going up that down * if you run into a problem going up, all you have to is let gravity bring you back to where you just were...going do