NoFap and Abstinence: What the Science Says About Testosterone, Sperm, and Self-Control

Online communities such as NoFap encourage people to stop masturbating for days, weeks, or months. Supporters often credit abstinence with higher testosterone, better semen, more energy, and stronger willpower. Critics say it is built on old myths. The truth is more nuanced than either side tends to admit. This guide looks at the studies that are usually cited, what they actually measured, and how to think about abstinence in a balanced, judgment-free way.

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What the frequently cited testosterone studies found, and their limits
Whether longer abstinence improves sperm quality (spoiler: not beyond a point)
What research says about why people choose abstinence in the first place
How to take a break in a healthy way, and when to seek support

Where NoFap comes from

NoFap began as an online community. In a 2020 study, researchers Felix Zimmer and Roland Imhoff noted that the NoFap subreddit had 516,444 followers at the time of their research and described its "reboot" challenges of 90 days without pornography, masturbation, or orgasm (Zimmer & Imhoff, 2020).

The idea of abstaining from masturbation is much older. Zimmer and Imhoff trace modern medical fears back to the 18th-century pamphlet Onania and to the physician Tissot, who wrote about a supposed "post-masturbatory disease." They begin their paper by noting "the lack of evidence for negative health effects of masturbation" (Zimmer & Imhoff, 2020). That context matters, because many abstinence claims assume masturbation is harmful in the first place.

Claims vs. evidence at a glance

Common claim	What research shows
Abstinence boosts testosterone	Small studies found temporary or modest rises. No evidence of lasting health or appearance benefits.
Abstinence makes sperm stronger	Not beyond a few days. In fertility clinic data, very long abstinence was linked to lower motility.
Masturbation causes ED	Not supported by medical sources. Evidence on pornography and ED is mixed.
Abstinence builds self-control	Not well studied. Motivation to abstain is linked mostly to beliefs about harm.

Claim 1: "Abstinence boosts testosterone"

This is the most popular claim, and it usually rests on two small studies.

Jiang et al., 2003 (China). Researchers measured blood testosterone daily in 28 male volunteers during periods of abstinence after ejaculation. From day 2 to day 5, testosterone changed very little. On day 7, there was a clear peak, reaching 145.7% of baseline. After that peak, no regular pattern was observed with continued abstinence (Jiang et al., 2003).

Exton et al., 2001 (Germany). Ten healthy men had their hormones measured during arousal and orgasm, both before and after three weeks of sexual abstinence. Orgasm itself did not change testosterone. Testosterone levels were higher after the three-week abstinence period, while the hormonal response to orgasm stayed the same (Exton et al., 2001).

How to read these results:

They are very small. 28 and 10 participants are not enough to draw firm conclusions for everyone.
The effects were temporary or modest. In the Jiang study, the rise was a one-time peak around day 7, not a steady climb the longer someone abstained.
Neither study measured outcomes people care about, such as muscle, mood, energy, confidence, or attractiveness. A short-term change in blood testosterone does not automatically translate into any of those.
Exton found orgasm does not drop testosterone. This undercuts the common idea that each ejaculation "drains" testosterone.

If you are concerned about low testosterone, the reliable step is a blood test and a conversation with a doctor, not a streak counter.

Line shape simplified for illustration; the only plotted number from the study is the day-7 peak (145.7% of baseline, Jiang et al., 2003).

Claim 2: "Saving it up improves sperm"

Sperm and semen quality do relate to how long it has been since the last ejaculation, but not in the way "retention" advocates suggest. A large study at an Israeli fertility center analyzed 9,489 semen samples from 6,008 men (Levitas et al., 2005):

In samples with low sperm counts, average sperm motility peaked at 30.3% after only one day of abstinence.
In samples with normal counts, motility and the proportion of normally shaped sperm declined after 11 to 14 days of abstinence.
The authors recommended that men with normal semen analyses not exceed 10 days of abstinence before providing a sample, and that men with male-factor infertility collect after just one day.

These are data from men attending a fertility clinic, so they may not apply perfectly to everyone. But they do not support the idea that longer is always better. If you are trying to conceive, ask your doctor or fertility clinic for their specific guidance on timing.

From Levitas et al. (2005), Fertility and Sterility. Men with male-factor infertility were advised to collect after just one day.

Claim 3: "Masturbation and porn cause erectile problems"

Many people join abstinence challenges because they are worried about erections. Cleveland Clinic lists erectile dysfunction and lowered libido among masturbation myths that research has not proven (Cleveland Clinic, 2022).

The pornography question is more debated. A study of four large online samples of men aged 40 and under from Croatia, Norway, and Portugal found little evidence that pornography use was associated with erectile, desire, or orgasm problems (Landripet & Štulhofer, 2015). On the other hand, a review that included clinical case reports described some men whose sexual difficulties improved after stopping internet pornography (Park et al., 2016). Case reports can raise questions but cannot establish cause.

A more specific and better-documented issue is technique. Sex therapist Michael Perelman notes that many men with delayed ejaculation use an "idiosyncratic" masturbation style that a partner cannot easily reproduce, and that reducing or changing masturbation is often part of treatment (Perelman, 2016). That is a targeted, temporary change for a specific problem, not a general rule that everyone should abstain.

Claim 4: "Abstinence builds self-control and confidence"

There is little direct research on whether masturbation abstinence improves self-control, focus, or confidence. What has been studied is why people want to abstain. In an online survey of 1,063 people recruited through a general (non-NoFap) Reddit thread, most participants had tried abstaining at some point. The strength of their motivation was linked mainly to attitudes, particularly the belief that masturbation is unhealthy, along with conservatism, religiosity, and lower trust in science. It was not significantly linked to behavioral measures such as the maximum number of orgasms (Zimmer & Imhoff, 2020).

This suggests that, for many people, the drive to abstain comes from beliefs about harm rather than from a measurable problem. It also explains why some people feel worse, not better, when a streak ends: the sense of failure can feed shame.

What about "porn addiction" and compulsive behavior?

Some people really do feel out of control. The WHO's ICD-11 includes compulsive sexual behavior disorder, defined by a persistent pattern of failing to control intense sexual urges, lasting an extended period such as six months or more, and causing marked distress or impairment (Kraus et al., 2018). The guidelines emphasize that distress coming only from moral disapproval of one's own sexual behavior is not enough for the diagnosis, and that people who call themselves "porn addicts" may not meet the criteria, though they may still benefit from help with issues like anxiety or depression.

If you recognize yourself in the first description, a structured break can be one tool, but it works best alongside professional support rather than as a solo willpower contest.

A balanced approach to taking a break

None of this means taking a break is bad. Some people simply want to change a habit, spend time differently, or reset how they relate to pornography. That is a valid personal choice. A healthier way to approach it:

Be clear about your reason. "I want more time for other things" is a realistic goal. "I want to double my testosterone" is not supported by evidence.
Focus on habits, not streaks. Changing when, how, or with what content you masturbate can matter more than total abstinence.
Watch for shame. If a relapse leaves you feeling worthless or anxious, the approach may be doing more harm than good.
Remember that masturbation is not harmful. Medical sources describe it as normal and healthy, so ending a break is not a failure.
Get support for real problems. Erection issues, delayed ejaculation, or compulsive use are best addressed with a professional.

This article is for general education and is not medical advice. See a doctor or urologist for ongoing erection problems, difficulty ejaculating, symptoms of low testosterone, or fertility concerns. If your sexual behavior feels out of control, or if guilt, anxiety, or low mood about it is affecting your daily life, a licensed mental health professional or certified sex therapist can help. If you have thoughts of harming yourself, contact local emergency services or a crisis line immediately.

The bottom line

The science behind NoFap's biggest promises is thin. Testosterone studies are small and show only temporary or modest changes. Semen quality does not keep improving with longer abstinence. Medical sources do not support the idea that masturbation causes erectile problems. At the same time, choosing to take a break is a legitimate personal decision. The healthiest version is driven by your own goals rather than fear, avoids shame, and turns to professional help when there is a real underlying problem.

Last reviewed: October 1, 2026