It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human sigh acts as a physiological reset button.
23
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
A person can live without food for about a month, but only about a week without water.
156
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
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