Masturbation is the act of touching or stimulating your own genitals for sexual pleasure. It’s one of the most common sexual behaviors across all ages and genders, and it’s a normal part of human sexuality. About 78% of men and 40% of women report masturbating within any given month, based on large population surveys.
How Masturbation Works
Masturbation involves stimulating the nerve-rich areas of your genitals, typically with your hands, though some people use vibrators or other devices. The physical sensations build toward orgasm, a peak of pleasurable muscle contractions and a rush of feel-good brain chemicals.
The anatomy behind this is remarkably sensitive. The clitoris alone contains more than 10,000 nerve fibers packed into a very small structure. For comparison, the median nerve running through your entire hand has only about 18,000. The head of the penis is similarly dense with nerve endings. This concentration of nerves is why genital touch produces such an intense physical response.
There’s no single “right” way to do it. People vary widely in what feels good, how often they do it, and whether they use fantasy, erotica, or nothing at all. All of this falls within the range of normal.
What Happens in Your Body
During orgasm, your body releases dopamine (often called the feel-good hormone) and oxytocin (sometimes called the love hormone). These chemicals boost your mood and create a sense of relaxation. They also counteract cortisol, your body’s main stress hormone, which is part of why masturbation can leave you feeling calmer afterward.
That hormonal shift is also why many people find it easier to fall asleep after masturbating. The combination of physical release, lowered stress hormones, and a flood of relaxation signals from your brain creates a natural wind-down effect.
Physical Health Benefits
Masturbation does more than feel good in the moment. For people who menstruate, orgasms can provide temporary relief from period cramps. The endorphins released during orgasm act as natural painkillers, and the increased blood flow and muscle contractions in the pelvic area may help ease tension.
For people with prostates, there’s a notable long-term benefit. A large study tracked by Harvard Health found that men who ejaculated 21 or more times per month had a 31% lower risk of prostate cancer compared to those who ejaculated 4 to 7 times per month. A separate analysis found that men averaging about 5 to 7 ejaculations per week were 36% less likely to be diagnosed with prostate cancer before age 70. The exact mechanism isn’t fully understood, but the association has held up across multiple studies.
Masturbation also helps you learn what feels pleasurable, which can make partnered sex more satisfying. When you understand your own body’s responses, you’re better equipped to communicate what works for you.
Common Myths That Aren’t True
A lot of misinformation about masturbation has been passed down through generations, often rooted in moral or cultural shame rather than science. Medical evidence has found no link between masturbation and blindness, hair loss, infertility, erectile problems, penis shrinkage, low sperm count, physical weakness, or mental illness. None of these claims hold up under scientific scrutiny.
Masturbation also doesn’t “use up” your sex drive or make you less interested in a partner. For most people, it exists comfortably alongside a healthy sex life.
Masturbation and Relationships
Most people in relationships continue to masturbate, and this is generally healthy. However, research from the University of North Texas found two factors that can create tension. People who consistently fantasized about someone other than their partner while masturbating, and who were less open with their partner about masturbating, reported lower relationship satisfaction. The masturbation itself wasn’t the issue. The secrecy and emotional distance around it were.
Being open with a partner about solo sexual activity tends to neutralize any negative effect on the relationship. For many couples, it’s simply part of each person’s individual sexuality.
When It Becomes a Problem
There’s no magic number of times per week that crosses a line. Frequency alone doesn’t determine whether masturbation is a problem. What matters is whether it’s interfering with your life.
The Mayo Clinic identifies several signs that masturbation (or any sexual behavior) may have become compulsive: you feel unable to control the urge despite wanting to, you experience guilt or regret afterward but keep repeating the behavior, you use it primarily to escape loneliness or anxiety rather than for pleasure, or it’s causing real consequences like damaged relationships, trouble at work, or financial problems. Another key sign is repeatedly trying to cut back and failing.
If masturbation feels like something you choose and enjoy, it’s almost certainly fine. If it feels like something that controls you, or if it’s replacing human connection rather than existing alongside it, that distinction is worth paying attention to.