When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Kissing an infection-free partner is good for your teeth!
141
The human brain is more active during sleep than during the day.
28
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
30
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