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In human sexuality, the refractory period is usually the recovery phase after orgasm during which it is physiologically impossible for males to have additional orgasms. [1] [2] This phase begins immediately after ejaculation and lasts until the excitement phase of the human sexual response cycle begins anew with low-level response.
The symptoms usually begin within 30 minutes of ejaculation, [5] and can last for several days, sometimes up to a week. [4] In some cases, symptoms may be delayed by 2 to 3 days or may last up to 2 weeks. [9] In some men, the onset of POIS is in puberty, while in others, the onset is later in life. [10]
The ejaculate is expelled in spurts, due to the movement of the muscles propelling it. These muscle contractions are related to the sensations of orgasm for the male. [5] Sperm are produced in the testes and enter the ejaculatory ducts via the vas deferens. As they pass by the seminal vesicles, a fluid rich in fructose combines with the sperm.
Keep in mind, though, that waiting too long can decrease sexual desire, increase the chances of premature ejaculation, and reduce the intensity of erections, according to Elist.
Retrograde ejaculation can also be a complication of diabetes, especially in cases of diabetics with long term poor blood sugar control. This is due to neuropathy of the bladder sphincter. Post-pubertal males (aged 17 to 20 years) who experience repeated episodes of retrograde ejaculation are often diagnosed with urethral stricture disease ...
How long the man has abstained prior to providing a semen sample correlates with the results of semen analysis and also with success rates in assisted reproductive technology (ART). Both a too short period of time since last ejaculation and a too long one reduce semen quality. A period of time of less than one day reduces sperm count by at ...
A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10 6 spermatozoa/mL or more, sperm count of 40×10 6 spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid ...
Levels of estrogen that are too high can be detrimental to spermatogenesis due to suppression of gonadotropin secretion and by extension intratesticular testosterone production. [35] The connection between spermatogenesis and prolactin levels appears to be moderate, with optimal prolactin levels reflecting efficient sperm production. [28] [36]