The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Every year your body replaces 98% of your atoms.
119
Every cigarette smoked cuts at least five minutes of life on average, which is roughly the time it takes to smoke one cigarette.
118
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
In older people, memory is best early in the morning and then declines during the late afternoon.
33
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
Your heart pumps about 2,000 gallons of blood each day!
53
One or two alcohol drinks a day can be anti-inflammatory.
75