The average sperm cell swims at 8 inches per hour.
76
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
A human being loses an average of 40 to 100 strands of hair a day.
133
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
In one day, adult lungs move about 10,000 litres of air.
11
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118