Feeling like you have stale sexual routine is a common indicator of a sexual rut. Again, this is nothing to be embarrassed about. People are creatures of habit. "A lot of times too, the male or the female feel like it's a chore," says Chuck. "So that's why they get stuck in a rut, is because they're like, 'I've just got to check this off my chore list so that I can get on with my day.'" He adds that older couples often experience something slightly different from (but related to) a sexual rut where they are interested in exploring new sexual activities.