The human brain doesn't stop developing until about 25 years old.
102
Every year your body replaces 98% of your atoms.
119
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
One human hair can support 3 ounces.
191
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human brain has the capacity to store everything that you experience.
4k
Yawns are more contagious among people with closer relationships.
163