The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human body contains over a billion miles of DNA.
147
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Your heart will pump about 212 million liters in its lifetime.
26
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55