Do all healthy married couples have sex?

Yes. A relationship without sex is not a healthy relationship. They say if the sex is good it's 10% importance in the relationship. If the sex is bad it's 90% of importance. Now if I twisted it to take healthy as in physically healthy, then no. Not all married couples have sex. But it's an incredibly low percentage of people that are in a ';sexless marriage'; (less than 10 times a year)