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Fun and jokes can prolong sexual intercourses with ten minutes according to an US-study.

In our society focused often on the size of the penis (instead of its other qualities), there are very few guys who haven't thought of some kind of enlargement. Jelqing is one of the methods.

Oral tumors can be caused by human papilloma virus, transmitted during oral sex, US scientists say.

It is generally believed that circumcision affects sexuality, the sensitivity of the penis, that is, the whole physical sensation. Researches prove contradictory things.

Three out of four commonly used lubricants cause decrease in sperm-motility and can injure the structural building of the chromosomes, according to Canadian researchers.