My husband insists that men can only physically go on with no sex (or masturbation) for a maximum of 3 days. Is this true?

Here's an article that may help shed some light on this topic: http://www.reuniting.info/ejaculation_how_often_for_good_health In the article, it as mentioned that without sex or masturbation, a man’s body will relieve his needs through wet dreams. This is just the physiological side of things I guess. There are guys go through periods of abstinence for more than three days. I think it is really up to the individual to decide on the duration (probably based on his mental strength.. haha).