If you are cold you are more likely to be hungry because you use energy to keep warm.
143
If you hold farts in during the day, they'll just come out when you sleep.
16
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
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 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
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31