To schedule sex, Sussman suggests a couple look for "windows of opportunity" in their calendars. “You have to look at your schedule and see what’s going on: What time do you get home from work? Are your kids in your bed all the time? Do you ever have any private time? You've got to look for at what your window is,” she advises. For example, if you have opposite work schedules but both have Sunday off, plan to have sex then.