Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Drinking watermelon juice before a workout helps reduce muscle soreness.
21
Fingernails grow nearly 4 times faster than toenails!
30
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
The average female will have 3.3 pregnancies in her life.
49
Human thigh bones are stronger than concrete!
63