It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
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
Human hair and fingernails continue to grow after death.
7