Babies crawl an average of 200m a day.
212
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 average sperm cell swims at 8 inches per hour.
4
Pain occurs when sounds are above 130 db.
124
A human being loses an average of 40 to 100 strands of hair a day.
133
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
You can't tickle yourself.
29