Looking to shed some weight after the Holiday's?, you may be better off heading for the bedroom rather than the gym.

Making love really does count as significant exercise, scientists say.

They have found that an hour of romance between the sheets burns almost as many calories as a 30-minute jog and so should be taken into account when drawing up a fitness plan.

Men burn 120 calories during half an hour of sex and women burn up 90

That is just under half the amount they would burn in a 30-minute jog. For brief periods during sex, some men used more energy than they did while on the treadmill.