There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Your heart will pump about 212 million liters in its lifetime.
26
If you hold farts in during the day, they'll just come out when you sleep.
16
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
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
The average sperm cell swims at 8 inches per hour.
76
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The human brain uses approximately as much energy as a 10 watt light bulb.
120