The human brain is insensitive to pain.
76
It is possible to go blind from smoking too heavily.
50
Nearly 80 percent of all sudden cardiac arrests happen at home.
7
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The lifespan of a tastebud is ten days.
130
The average person has over 1,460 dreams a year!
69