There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Male hospital patients fall out of bed twice as often as female hospital patients.
71
Your body is creating and killing about 2.4 million red blood cells per second.
17
You would need to smoke between 20,000-40,000 joints to be at risk of dying of a THC overdose.
12
Most dreams last only 5 to 20 minutes.
79
The human brain is more active during sleep than during the day.
28
It is possible to go blind from smoking too heavily.
50
Fingernails grow nearly 4 times faster than toenails.
31