Love boosts your body's immunity
Your husband may occasionally give you a cold, but believe it or not, couples in love have less frequent annual visits to the doctor than those without love in their life. A study by Wilkes University found that having sex at least once a week increases your levels of IgA, the antibody that fights illnesses and keeps us healthy [WebMD]. Oxytocin may play a role, too. This important hormone is released when we kiss or touch someone we love, and studies show that it can suppress stress hormones and boost immunity.
Other experts believe that immunity isn't just increased by regular sex but also has to do with the ability to keep people close. Be sure to plan dates with both your friends and significant other.