Masturbation is giving yourself physical pleasure, often (but not always) to achieve orgasm.

For males:

For females:

Other than taking up your time (doing something fun), there are few drawbacks to masturbation. You palms will not grow hairy, you will not go blind, nor will any other ridiculous claims occur. Masturbation is perfectly healthy (but not to excess).

Nope, there is nothing wrong with masturbation. Be back later.

Meanwhile, back in 2006, a McGill University study measured the sexual arousal rates of both men and women. On average, men and women take about 10 minutes to reach maximum arousal.

Note: In the first version of this book, this page perpetuated an outdated, inaccurate stereotype about female arousal. While intended as humorous sarcasm, it promoted a sexist attitude.