It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The human brain doesn't stop developing until about 25 years old.
102
The average person's skin weighs twice as much as their brain.
131
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
It takes about 20 seconds for a red blood cell to circle the whole body.
102