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Special freezing extender use also allows cryogenic preservation of sperm, which may be transported for use, or used on-site at a later date. [2] Semen extenders should not be confused with drugs or nutritional supplements designed to increase the volume of semen released during an ejaculation. The efficacy and utility of volume increasers is ...
Research conducted by Indiana University's Center for Sexual Health showed that using lube makes it 50% easier for both men and women to orgasm. And it makes sense, too: according to Elist, lube ...
The most common cryoprotectant used for semen is glycerol (10% in culture medium). Often sucrose or other di-, trisaccharides are added to glycerol solution. Cryoprotectant media may be supplemented with either egg yolk or soy lecithin, with the two having no statistically significant differences compared to each other regarding motility, morphology, ability to bind to hyaluronate in vitro, or ...
Pre-ejaculate also acts as a lubricant during sexual activity, [1] and plays a role in semen coagulation. [1] Low levels or no sperm exists in pre-ejaculate, although studies examined small samples of men. [4] [6] Two contrary studies found mixed evidence, including individual cases of a high sperm concentration.
Research shows that older men and women with low testosterone have lower red blood cell counts and an increased risk of developing anemia. Anemia can produce symptoms like fatigue, weakness, loss ...
Duration can be influenced by positions, gentle or stronger movements, and by touching erogenous zones with the hands. [50] The needs for movements are individually different for both women and men. [51] [52] For women, pelvic floor training and active movements of their pelvis during vaginal intercourse increase the chance of orgasm.
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