If you are cold you are more likely to be hungry because you use energy to keep warm.
143
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
A person can live without food for about a month, but only about a week without water.
156