If you hold farts in during the day, they'll just come out when you sleep.
16
The human sigh acts as a physiological reset button.
23
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Your body is creating and killing about 2.4 million red blood cells per second.
17
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Within three days of death, the enzymes that once digested your food begin to eat you.
22
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
If your DNA was stretched out it would reach to the moon 6,000 times.
256