Sweat is actually odorless. It’s only when bacteria on the skin and hair metabolize the proteins and fatty acids in sweat that it produces an unpleasant scent.

A person who sleeps too much, sits too much, and isn’t active enough, is more than four times as likely to die early.

Our mouths secrete approximately one liter of saliva per day.

The human heart has three types of blood vessels; arteries, veins, and capillaries. Arteries carry oxygenated blood away from the heart. Capillaries connect them to the veins, and veins return the used blood back to the heart.

In thirty seconds, you will (on average) produce  seventy-two million red blood cells, shed 174,000 skin cells, and have twenty-five thoughts.

Cold showers are actually healthier than hot ones. Among other benefits, they improve immunity and circulation, ease stress, and relieve depression.

Studies conducted at Indiana University Media School discovered that watching cat videos actually boost viewers’ energy and positive emotions and decreases negative feelings.