Most of the widely claimed benefits of not masturbating, such as increased strength, better focus, and higher testosterone, have little or no support in clinical research. That doesn’t mean abstinence has zero effects on the body, but the picture is more nuanced than popular communities like NoFap suggest. Here’s what the evidence actually shows, both for and against.
The Testosterone Spike Is Real but Brief
The most frequently cited benefit of abstinence is a rise in testosterone. This claim traces back to a study published in the Journal of Zhejiang University, which found that testosterone peaked at 145.7% of baseline on the seventh day of abstinence. That’s a meaningful jump, roughly 46% above normal levels, and it was statistically significant.
What gets left out of most discussions is what happened after day seven: levels returned to baseline. The spike is temporary, not cumulative. Abstaining for weeks or months does not produce progressively higher testosterone. Your body self-regulates. So while there is a real hormonal window around one week, it’s not the sustained boost that many people expect, and it’s unclear whether a single-day spike translates into any noticeable change in energy, mood, or muscle growth.
No Measurable Effect on Strength or Athletic Performance
One of the most common beliefs is that abstinence improves physical performance. A controlled study tested this directly, measuring grip strength, vertical jump height, push-up endurance, reaction time, and overall physical work capacity under three conditions: no sex the night before, sex the night before, and yoga the night before. The results showed no significant differences across any measure.
This aligns with the broader sports science literature. While some athletes avoid sex before competition out of tradition or superstition, the evidence consistently fails to show that recent ejaculation impairs strength, power, or endurance. If you feel more energized during abstinence, the explanation is more likely psychological (a sense of discipline or motivation) than physiological.
Sperm Quality Changes With Abstinence
If you’re trying to conceive, short-term abstinence does have one clear, measurable benefit. Semen volume, sperm concentration, and total sperm count all increase significantly with longer gaps between ejaculations. For men with borderline fertility, even a few days of abstinence can raise these numbers.
There’s an important caveat, though. Sperm motility, viability, and morphology (how well sperm swim and whether they’re shaped correctly) don’t improve with abstinence. And prolonged abstinence beyond about a week can actually decrease sperm quality because older sperm accumulate DNA damage. The World Health Organization recommends an abstinence window of two to seven days before a semen analysis, which reflects the sweet spot where quantity is up without sacrificing quality.
Sleep Actually Gets Worse Without Orgasm
Many people in abstinence communities report sleeping better, but objective sleep data tells the opposite story. A 2025 study using wearable sleep trackers found that participants spent more time awake after falling asleep on nights without sexual activity (about 23 minutes) compared to nights following masturbation or partnered sex (about 16 minutes each). Sleep efficiency was also worse on abstinence nights, and participants spent more time in the lightest stage of sleep.
The reason is hormonal. Orgasm triggers a release of prolactin and oxytocin while suppressing cortisol, your primary stress hormone. That combination has a measurable sedative effect. Skipping orgasm removes that chemical wind-down, which can leave you in lighter, more fragmented sleep.
Prostate Health Favors Regular Ejaculation
One of the strongest arguments against long-term abstinence comes from prostate cancer research. A large Harvard study following tens of thousands of men found that those who ejaculated 21 or more times per month had a 31% lower risk of prostate cancer compared to men who ejaculated four to seven times monthly. A separate analysis found that men averaging roughly five to seven ejaculations per week were 36% less likely to be diagnosed with prostate cancer before age 70.
The mechanism isn’t fully understood, but the leading theory is that regular ejaculation flushes out potentially carcinogenic substances and reduces the buildup of prostatic secretions. This doesn’t mean that occasional abstinence is dangerous, but it does suggest that making long-term abstinence a lifestyle carries a real tradeoff.
What Abstinence Can Actually Help With
Where abstinence does show genuine benefits is in cases where masturbation has become compulsive or is interfering with daily life. If you’re using pornography multiple times a day, struggling to maintain arousal with a partner, or finding that masturbation is replacing social interaction, taking a break can help reset your relationship with sexual stimulation. This isn’t about masturbation being inherently harmful. It’s about breaking a pattern that has become problematic for you specifically.
Some people also report improved focus, confidence, and motivation during abstinence. These effects don’t show up in controlled studies, which suggests they’re driven by the psychological experience of exercising self-discipline rather than by any hormonal or neurological change. That doesn’t make them less real to the person experiencing them. Feeling in control of a habit can genuinely improve your self-image, and that shift in self-perception can ripple into other areas of life.
The Bottom Line on the Evidence
The claimed physical benefits of not masturbating are largely unsupported. Testosterone spikes briefly at one week and returns to normal. Strength and athletic performance don’t change. Sleep quality tends to get worse, not better. And long-term abstinence may slightly increase prostate cancer risk. The real benefits are situational: improved sperm count for men trying to conceive, and a psychological reset for those who feel their habits have become compulsive. For most people, moderate masturbation is neutral to mildly beneficial for health, and the decision to abstain is better framed as a personal choice than a health optimization strategy.