A steamy sex session is not the same as an intense workout at the gym, says a health expert.

"You''re not going to get the same [physical health] benefit as going out for a 2-mile jog," Jamie Feldman, associate professor at the University of Minnesota Department of Family Medicine and Community Health, told ABC News.

"Sexual activity provides some degree of modest exercise. But it''s not the same as getting moderate exercise for 30 minutes a day."