The average human emits approximately 95 watts of energy as heat in the form of infrared light. A standard 100 watt incandescent light bulb emits only about 5% of its energy as visible light, the rest is given off as heat in the form of infrared light. This means the average human produces the same amount of heat as a 100 watt light bulb.

Human skin produces Vitamin D when exposed exposed to sunlight, specifically ultraviolet B radiation.

Drinking 16 ounces of ice water(0 degrees Celsius), requires the body to burn 17.5 Calories to warm the water up to body temperature. The recommended daily intake of water is 64 ounces (eight 8-ounce glasses). The body will burn 70 Calories if this amount is consumed as ice water.

On average, a child uses 730 crayons by their 10th birthday.

Scientists have discovered that the feeling experienced when we are tickled causes us to panic and is a natural defense to little creepy crawlers like spiders and bugs. That same ticklish feeling sends us into a state of panic and elicits a response of uncontrollable laughter if a person tickles us.