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

Well my fiance says that it's pretty much true, and 3 days is already pushing it haha. I've also read that if the man has never had sex, the urge can be controlled better and he can go longer without doing the deed(s). But if he used to it, to suddenly go without it is like going cold turkey and it will definitely be more difficult to control his sexual urges. It's also not too healthy as manifested in the condition known as "blue balls".