Your thumb is about the same size as your nose.
124
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Enamel is hardest substance in the human body.
61
Every year your body replaces 98% of your atoms.
119
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Our Right Lungs takes more air than our left lung.
194
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149