As we outlined above, sperm counts are typically highest after waiting for two days, but sperm quality is negatively affected after seven days.
For healthy semen samples collected between 5:00am and 7:30am were found to exhibit a statistically higher sperm concentration, total sperm count and a higher percentage of normally shaped sperm, compared to samples produced later in the day.
Key takeaways. Circadian rhythms may influence semen quality due to fluctuations in hormones and body temperature over a 24-hour period. Previous advice was based on research that found early morning was the optimal time for semen quality.
Semen quality and age
According to a study conducted in Israel, a man's sperm is in optimal conditions between the ages of 30-35. And in general, after age 55, sperm quality is found to be at the lowest quality.
Summary: Sperm in the first fraction of ejaculate are more numerous, move more and present better quality DNA than those lagging behind.
The next time you have sex, the number of sperms is not as much as the first time, but the quality of sperm remains stable, and that quantity is enough for fertilization to occur. This proves that having sex twice in a row is still possible to get pregnant if there is no reasonable protection.
A trained expert checks your sperm count, their shape, movement, and other characteristics. In general, if you have a higher number of normal-shaped sperm, it means you have higher fertility. But there are plenty of exceptions to this. A lot of guys with low sperm counts or abnormal semen are still fertile.
There is no specific frequency with which a man should ejaculate. There is no solid evidence that failure to ejaculate causes health problems. However, ejaculating frequently can reduce the man's risk of getting prostate cancer. Ejacu-lation can be through having sex or masturbating a few times a day.
Some studies suggest that moderate ejaculation (2–4 times per week) is associated with a lower prostate cancer risk. However, ejaculating more often doesn't mean your cancer risk drops even more.
Nightfall in men is wrong and abnormal: there is nothing wrong or abnormal about nightfall; it is a normal part of growing up and becomes rarer as a male grows up. Rare nightfall in men is not harmful and one need not feel guilty. Nightfall is just spontaneous tendency to empty the reservoir of sperms in adolescents.
A sleep duration of 8–9 h has not been reported to reduce semen quality, but sleeping longer than 9 h has been associated with reduced semen quality in two studies with fertile men [8, 9]. However, sleeping longer than 8 h has also been associated with better semen quality in men suspected of infertility [13, 14].
According to the World Health Organization guidelines, stopping ejaculation for 2 to 7 days is recommended before sperm collection for semen analysis.
That being said, there are studies (linked below) that show that men are most fertile in the mornings and during winter months. One study suggests that the volume of sperm found in the testicles is higher in the morning, this is hypothesized for a number of reasons.
All of the 11 relevant studies demonstrated that increased total sperm count was associated with longer abstinence time [4, 9–12, 14, 16, 18, 22–24]. It should be noted that all included studies reported total sperm count, not concentration.
A male's body is constantly creating sperm, but sperm regeneration is not immediate. On average, it takes a male around 74 days to produce new sperm from start to finish. Although the average time is 74 days , the actual time frame for an individual to make sperm can vary.
masturbating 1 to 2 hours before having sex. using a thick condom to help decrease sensation. taking a deep breath to briefly shut down the ejaculatory reflex (an automatic reflex of the body, during which you ejaculate) having sex with your partner on top (to allow them to pull away when you're close to ejaculating)
Women need only wait a few seconds before the second round, with many even achieving multiple orgasms in one session. In comparison, the male refractory period varies post ejaculation, with some men ready after a few minutes and some men needing several hours to days.
The concentration of sperm is what makes the semen cloudy and thick, so if your ejaculate is watery it is possible that you have a low sperm count. This doesn't mean you're infertile (so precautions to prevent pregnancy still need to be taken for couples that don't want to get pregnant).
Men start losing their fertility at age 40.
In a study of more than 1,900 couples, irrespective of the woman's age, IVF attempts involving men 40 or older failed 70 percent more often than IVF attempts involving men younger than 30. Previous theory: Older men produce fewer kids because they get less sex.
A man can smell when a woman is ovulating - and the proof is in his testosterone, says a new study from Florida State University that had undergraduate men sniffing sweaty T-shirts for course credit.
How much sperm does it take? In theory, a single sperm is all it takes to get pregnant. But even in a large amount of semen — such as the quantity in one ejaculation — only a fraction of the sperm are healthy, moving, and sufficiently well-formed to cause a pregnancy.
How many sperm do you need to get pregnant? It takes just one sperm to fertilize a woman's egg. Keep in mind, though, for each sperm that reaches the egg, there are millions that don't. On average, each time men ejaculate they release nearly 100 million sperm.