Your thumb is about the same size as your nose.
124
The human body contains over a billion miles of DNA.
147
The average sperm cell swims at 8 inches per hour.
76
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Enamel is hardest substance in the human body.
61
The average person's skin weighs twice as much as their brain.
131
Chewing gum boosts your brain power.
285