False. The virility of a man cannot be measured on the basis of the hardness of his erection.
False. Although the presence of an erection on waking gives a sign of good functioning of the erectile system, it is normal for men not to have an erection every time they wake up.
False. Masturbation is not a cause of erectile dysfunction.
False. Early ejaculation (often referred to as premature ejaculation) is not directly associated with erectile dysfunction.