It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
94
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
One human hair can support 3 ounces.
191
Your fingernails grow faster in summer.
744
Human hair and fingernails continue to grow after death.
7
You can't tickle yourself.
29