It is possible to go blind from smoking too heavily.
50
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18