On average, there's 100 billion neurons in the human brain.
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
An average adult produces about half a liter of flatulent gas per day, resulting in an average of about fourteen occurrences of flatulence a day.
The chemicals indole and skatole, which help to account for the particular smell of human feces, are used as ingredients in perfume!
The lifespan of a tastebud is ten days.
Your hair grows faster in the morning than at any other time of day.
The average person's skin weighs twice as much as their brain.
Every cigarette smoked cuts at least five minutes of life on average, which is roughly the time it takes to smoke one cigarette.