A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
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 person's skin weighs twice as much as their brain.
131
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
According to a 1950s survey, 75% of men ejaculate within two minutes of penetration.
109
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
A woman's sense of smell is most sensitive during ovulation.
34