The male fetus is capable of attaining an erection during the last trimester.
75
Your heart rate can rise as much as 30% during a yawn.
69
Clinophobia is the fear of beds!
30
Common pesticides such as roach, termite, and flea insecticide can be found in the bodies of the majority of Americans.
11
The average sperm cell swims at 8 inches per hour.
76
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99