The average person's skin weighs twice as much as their brain.
131
Every year your body replaces 98% of your atoms.
119
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
When you take a step, you are using up to 200 muscles.
886
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
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain doesn't stop developing until about 25 years old.
102