When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
The human brain is more active during sleep than during the day.
28
Yawns are more contagious among people with closer relationships.
163
There are about 255 babies born worldwide every minute.
46
The average person's skin weighs twice as much as their brain.
131
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Pain occurs when sounds are above 130 db.
124