1. FALSE. Some start as early as eleven. Generally, though it
is between fourteen and seventeen.
2. FALSE. Many physical reasons can cause impotence, including hardening of the penis arteries, disease, medication and hormonal fluctuations.
3. TRUE. Many elderly people report strong sexual interests into old age.
4. FALSE. Often psychological reasons (guilt) may inhibit orgasm but so can temporary stress in most men.
5. FALSE. Reflex circuits, such as when the bladder is full, can cause nocturnal erections.
6. TRUE. Forget about trying an aphrodisiac. The best love-producer is old-fashioned caring and tenderness.
7. FALSE. No evidence supports this belief. Sex serves many functions but normal sex does not drain energy.
8. TRUE. In older men, men with certain physical conditions or with certain medications, the ejaculant goes into the bladder (retrograde ejaculation) due to the valves not working properly. The ejaculant is expelled with urine. There is nothing wrong with this unless the man and his wife are trying to conceive.
9. TRUE and FALSE. Men have been known to have heart attacks during sex but also during sleep. Sex is no more risky than mild exercise but men should get treatment anyway for any heart problem.
Taken from The Sexual Man: Masculinity without guilt