It takes 17 muscles to smile, 43 to frown.
65
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
One or two alcohol drinks a day can be anti-inflammatory.
75
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Your heart will pump about 212 million liters in its lifetime.
26
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
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16