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
In the average lifetime a person will breath in about 44 pounds of dust.
21
A man's beard grows fastest when he anticipates sex.
239
You would need to smoke between 20,000-40,000 joints to be at risk of dying of a THC overdose.
12
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
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
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Chewing gum boosts your brain power.
285