The average sperm cell swims at 8 inches per hour.
76
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 whiter your tongue, the more germs there are on it.
88
The average office desk has 400 times more bacteria than a toilet.
22
Our brains have a negativity bias and will remember bad memories more than good ones.
15