Our brains have a negativity bias and will remember bad memories more than good ones.
15
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The average person's skin weighs twice as much as their brain.
131
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
The human brain has the capacity to store everything that you experience.
4k
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139