Semen retention has no demonstrated benefit for sustainably increasing testosterone or turning retained semen into energy. It can remain a personal choice. But the famous hormonal peak on the seventh day comes from a retracted publication, and fertility data do not support the idea that more abstinence always means better sperm.
The useful question is therefore less “how many days should I last?” than “what problem do you want to solve?”. Cutting back on porn, reclaiming time and preparing for a semen analysis are three different goals. None justifies treating every ejaculation as a withdrawal from your health savings.
Semen retention, abstinence and NoFap: three things to keep separate
Semen retention means deliberately avoiding ejaculation. It can accompany complete sexual abstinence or sexual activity stopped before ejaculation. This is the definition used by the International Society for Sexual Medicine, ISSM.
NoFap refers to a range of approaches, often focused on stopping masturbation or pornography use. You can masturbate without a screen, have sex without aiming to ejaculate, or stop watching videos while keeping a sex life that includes orgasms. These changes are not interchangeable.
Our analysis of NoFap and testosterone · FR focuses mainly on promises of discipline and performance. Here, the central issue is sexual health: hormones, the prostate, sperm and the conditions that keep a practice freely chosen.
What ejaculation actually does
Ejaculation is a reflex controlled by the nervous system. Sperm cells mix with secretions from the reproductive glands, then contractions expel the semen. Orgasm is the experience of peak pleasure: it usually accompanies ejaculation, but the two phenomena are not identical. The Cleveland Clinic explains this distinction.
This mechanism does not describe draining your testosterone reserves. Nor does the presence of biological substances in semen demonstrate that avoiding their release would improve your brain or muscles. That would require measuring a benefit in people practising retention, against a credible comparator.
Testosterone: what is the day 7 peak worth?
The viral figure comes from a paper by Jiang and colleagues published in 2003, involving 28 volunteers. Its abstract reported testosterone reaching 145.7% of baseline on the seventh day. That means an increase of 45.7%, not 145.7%. The abstract did not describe a continuing rise afterwards. The PubMed record now flags the retraction.
The editorial notice of 10 December 2021 gives the reason: substantial overlap with an earlier paper published in Chinese. This reason does not establish that the measurements were fabricated. It also means these publications cannot be counted as two independent confirmations.
Even setting that issue aside, a one-off finding in 28 men validates neither an optimal ejaculation schedule nor a lasting boost in vitality. A change in blood levels and a felt improvement are two different outcomes. Marketing latched onto day seven. Clinical evidence is still missing.
Is there any evidence in favour of abstinence?
Yes, one small signal deserves a mention. A 2001 study in ten adult men compared their responses before and after three weeks of abstinence. Testosterone was higher after this period, while orgasm itself did not change it. The protocol primarily examined hormonal and cardiovascular responses to orgasm.
Ten participants, a before-and-after comparison and no measurement of lasting benefits for fatigue or health are not enough to recommend retention. This finding makes a fluctuation plausible, not a treatment for hormone deficiency. To interpret a test result, it is better to understand the limitations of a single testosterone measurement · FR than to choose the blood draw supposedly set to crown an abstinence streak.
“Energy”: a feeling can be real without proving the mechanism
Someone may feel more available after changing their sexual habits. That does not demonstrate that retained semen produces the improvement. If they cut out late-night videos, go to bed earlier and reclaim time, several explanations are competing. Their account describes what happened without isolating the cause.
The ISSM stresses that broad promises of physical and mental benefits from retention are not backed by convincing scientific evidence. To assess how you feel, define “energy”: less sleepiness, more free time, more motivation to work or fewer sexual preoccupations? These observations do not tell the same story.
Quitting porn does not amount to a proven “reset” either. A 2023 randomised trial in 176 students, mostly women, compared seven days without pornography with usual use. It found no significant main effect on withdrawal symptoms, affect or craving. An exploratory analysis suggested greater craving in some daily users with problematic use. This limited finding validates no special power of male semen retention.
Ejaculation and prostate cancer: an association, not a quota
The large study often cited is the cohort study by Rider and colleagues, published in 2016. It included 31,925 American men, followed until 2010 after a 1992 questionnaire. Participants reported their ejaculation frequency at different stages of their lives.
For reported frequency between ages 40 and 49, at least 21 ejaculations per month were associated with a lower hazard of diagnosis than 4 to 7: an adjusted hazard ratio of 0.78, with a confidence interval of 0.69 to 0.89. This corresponds to about 22% less on this relative measure, not a reduction of 22 percentage points in absolute risk. The signal mainly concerned low-risk cancers.
Retrospective reporting and differences between participants limit causal interpretation. This study demonstrates neither that ejaculation prevents cancer nor that a period of abstinence causes it. Nor does it provide a prescription for 21 ejaculations per month.
Your sex life does not need to become a prevention performance dashboard. A personal concern about your prostate calls for a medical discussion, not waiting for a sexual tally to provide an answer.
Sperm quality: more volume does not mean more fertility
A semen analysis measures several parameters, including volume, concentration, motility and morphology. Sperm DNA fragmentation is another indicator, examined in certain contexts. These measures can move in different directions depending on the time since the last ejaculation.
A 2024 meta-analysis pooling thirteen studies and 2,315 participants found this trade-off. Longer abstinence was associated with greater volume and concentration, but also with more DNA fragmentation and lower progressive motility. Participants included men being investigated for infertility and healthy donors. The intervals compared varied across studies.
You therefore cannot infer the ability to conceive from the appearance or amount of semen. This review mainly concerns laboratory parameters, not a guarantee of pregnancy or live birth. Nor does it allow a man to be labelled infertile after a few days without ejaculation.
For a semen analysis or when trying to conceive
For sample collection, follow the interval requested by the laboratory and report the interval you actually observed. The two-to-seven-day reference range reported in this literature aims to standardise the analysis. It does not describe an optimal sexual frequency to follow all year. Deliberately changing this interval to obtain a more flattering result makes the comparison less useful.
For natural conception with no known infertility, the ASRM recommends intercourse every one to two days during the fertile window, depending on the couple’s preferences. It advises against limiting intercourse for fear of depleting sperm. Saving it for several weeks to “charge up” fertility is therefore not an evidence-backed strategy. In assisted reproduction, the care team’s instructions take priority.
Risks: watch for compulsion and symptoms
Choosing not to ejaculate is generally not dangerous in itself. The ISSM distinguishes this abstinence from practices that restrict blood flow to the penis. Do not use compression or a tight device to prevent ejaculation. Involuntary difficulty ejaculating is something else again: if it develops or persists, discuss it with a doctor.
Frequency alone does not define a problematic sex life. The ISSM notes that there is no universal “normal” masturbation frequency. The useful criteria are control, comfort and effects on everyday life.
The clinical framework described by Kraus and colleagues for compulsive sexual behaviour emphasises persistent loss of control and substantial impairment. A high libido or distress solely related to moral judgement is not enough for a diagnosis. That does not stop you seeking help for overwhelming guilt.
The “Toll”, meaning the hidden cost of a solution, can here become the attention spent monitoring every urge. If maintaining a streak leads you to avoid intimacy you want or punish yourself after an orgasm, reassess the rule. A spiritual or personal choice remains worthy of respect without needing a hormonal promise to defend it.
When to seek medical attention without delay
Sudden, severe testicular pain, accompanied by nausea or persisting at rest, requires urgent assessment. The NHS notes that testicular torsion is one possibility. In France, contact emergency services or call 15/112. Do not automatically attribute this pain to abstinence, and do not wait for an ejaculation to see whether it goes away.
A lump, swelling or persistent discomfort also warrants medical advice. For sexual difficulties or loss of control, a doctor or healthcare professional trained in sexology can help without imposing an ideal frequency.
A practical approach without a performance challenge
I do not recommend a retention protocol to “boost” hormones: no validated duration achieves this. If your goal is behavioural, start with the variable that is actually causing a problem. An observational approach, not a treatment, can stay simple:
- Define a concrete goal, such as cutting out videos that delay bedtime, rather than accumulating days without orgasm.
- For one week, observe the time involved, triggering situations and effects on your sleep or activities.
- Then choose just one change that fits your sex life, and discuss it with your partner if it affects you both.
- Review after two weeks: time reclaimed, comfort, freedom of choice and how much space the rule takes up.
- Stop the experiment if it increases pain, shame or preoccupation. Seek advice if difficulties persist.
These time frames structure personal observation; they do not correspond to a demonstrated biological window. An improvement does not automatically identify its mechanism. Keep what gives you more choice in your sex life, without turning an ejaculation into a wrongdoing or a calendar into a prescription.
Three situations to help you decide without confusing the goals
If you enjoy a period of abstinence for personal reasons and it causes you no distress, you do not need to find a medical benefit for it. A preference is not a therapeutic trial. You can also change that preference later without invalidating your original choice.
If your problem is time spent on porn, avoiding all ejaculation removes several behaviours at once. Starting with the videos lets you ask a more precise question: does their absence change your evenings? If you simply replace those videos with hours of browsing elsewhere, your abstinence streak can grow without solving the identified problem.
If your goal is to conceive, the relevant indicators change again. Visibly more abundant semen does not answer the couple’s question, and a laboratory result alone does not tell the whole fertility story. Note the instructions you receive, the intervals you actually observe and the questions to ask the team, rather than comparing your volume with a standard found on a forum.
In all three cases, keep one principle in mind: a personal experience can guide a preference, but it cannot establish a general effect on hormones, cancer or fertility. It is precisely when these three levels get mixed up that promises become misleading.
The Verdict
Main sources
The following studies, notices and clinical documents distinguish observed findings from practical advice:
