The sex-boosting relationship quality

Expert insight:

While other qualities are definitely important for relationship satisfaction, this is the only one that will consistently cut through the exhaustion of life. “If both individuals still feel desire despite work, stress, children, lack of sleep, and scheduling differences, they’ll always make time for sex,” says Jennifer Gunsaullus, Ph.D., a sociologist and intimacy coach in San Diego who was not involved in the study.

The bottom line:

For a more robust sex life, try having fantasies about your SO more often, which the study suggests is linked to passion. Apart from sex, Gunsaullus also recommends spending at least 45 naked or minimally clothed minutes with your other half once a week.