Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
There's 100 trillion good bacteria living in your body.
17
Your heart will pump about 212 million liters in its lifetime.
26
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The human sigh acts as a physiological reset button.
23
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55