When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
In Japan, condoms are commonly sold 'door to door'!
54
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
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
Dieters who sleep more take off more fat that those who sleep less.
159
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21