A friend in military told us that as part of their training they are given injections to curb sexual desire. They can't even masturbate. Its given regularly every month or so until their training is complete.
That's an urban legend. Some variations also say the drug is in the food.
Extremley strenuously exercise is known to lower testosterone. I wonder if people believe this urban legend because their bodies are in shock and they lose libido due to basic training exercises?