There are contraceptives for men?

A condom does not give 100%, and somewhere in the 70-75% because eager. Completely reliable tools were invented by the Chinese. In the middle ages they found that if the scrotum before sex a few minutes to hold in the hot (very hot) water, the viability of sperm drops sharply. In the days of Mao TSE Tung was calculated even more reliable method: the amputation of one of the testicles. Gives about the same reduction in the probability of fertilization as a condom (about 75%). Is caused by the fact that fertilization is proportional to the square of the number of sperm.\r\n\r\nYou can copulate both Chinese money and nothing after that, not fear.\r\n\r\n\r\n\r\prinoshu apology. I was just using the PM corrected. In the second method, the proportionality is not a square, and a cube (even filling the sperm volume of the uterus). Thus the probability becomes equal to 87.5%, that is higher than condom.
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