Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
When you take a step, you are using up to 200 muscles.
886
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The male fetus is capable of attaining an erection during the last trimester.
75
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
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26