Not all sex is equal. There are sessions that are slow and gentle and others that are vigorous and intense. Depending on the style, position, time and intensity, you can use sex as an exercise substitute--if you and your man are up to it.
According to Canadian researchers, men use up around four calories a minute during sex while women burn just a little over three calories. To help you understand just how many calories you're burning and how the conjugal chamber can be the next best thing to a gym, here are the most common (and fun!) sex positions and how much they burn.