Absolutely. Recent research suggests that during sex, your body experiences physical changes equivalent to an intense workout. Sex gets your heart racing, increases energy, raises your metabolic rate, stretches all kinds of muscles and, of course, burns calories.
Psychologists and health experts believe sex can do more than just put a smile on your face; sex can cure headaches, boost the immune system, provide stress relief and be a valuable addition to your exercise routine.
According to most sources, the "average" lovemaking session (30 minutes) burns between 50 and 100 calories, but consider that the number of calories burned during sex (or any activity, for that matter) is a function of many different factors. Several variables like body weight, environmental temperature, duration, intensity, effort, frequency and position will affect the actual number of calories burned.
Having sex three times a week burns around 7,500 calories per year. That's roughly the equivalent of jogging 75 miles, or about 1.4 miles per week, according to Healthcentral.com. The more intense the sex, the more calories burned: up to 15,000 calories annually (at a frequency of three times per week). 15,000 calories is equivalent to about 4 pounds of weight loss per year, just from having sex three times a week. Not too shabby.