penis

I have tried everything i get hard erections but they only go straight out what needs to be done to get those pornstar like hard ons and does anyone elses erection ust go straight like arrow?

https://www.researchgate.net/publication/282697462_Improving_effect_of_evening_primrose_oil_on_the_sexual_functions_of_male_mice The present study was undertaken to evaluate the effect of evening primrose oil (EPO) on the male sexual functions. EPO (daily 0.5 ml/mouse) was orally intubated for...

A very interesting study, not only because of its obvious social implications but also because it confirms the anabolic effects of the vitamin D/K combination, as well as the likely androgenic effects of vitamin D. I could not help but pronounce the D/K combo in my head as "dee-k" :): Another...

The study below demonstrates that not only may androsterone be the primary pro-hormone used endogenously for DHT synthesis, it likely also drives the masculinization of sexual organs in the fetus. For a long time it was thought that the so-called "front pathway" using testosterone (T) produced...