The human brain is more active during sleep than during the day.
28
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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The whiter your tongue, the more germs there are on it.
88
20 minutes after smoking a cigarette, blood pressure drops to normal.
37