Why should men have the monopoly on hardcore fat-busting exercise? If you've been put off certain sports in the past by a bunch of grunting, muddy neanderthals, take heart. Rugby, football and boxing can all amp up your workout - no bruises guaranteed!
The game of rugby is synonymous with broken noses and is played by giant-sized men with shoulders the width of hulking wardrobes. Don't let this put you off, as touch rugby combines the fun of chasing a ball around with no contact or broken bones. Players tackle each other by tapping parts of the body or the ball. It's a fearsome calorie burner (500 or more per match) and will hugely improve your cardiovascular fitness.
Women's boxing has gained mainstream appeal in recent years with its inclusion as an Olympic sport. However you don't have to jump in the ring and start punching someone to get the benefits. Take a regular women's only boxing class to try out techniques, learn the difference between a jab and an uppercut and get nifty with a skip rope. If you want to shape up your arms, this is the class for you as all the punching (on pads) will build muscle. Expect to burn off anything from 400-700 calories per class.
In America, women's football has become a massively popular sport and it's gaining in popularity over here. You can join a local team if you prefer a structured approach or just have a regular kickabout with friends in the park. As you never stop moving (unless you're the goalie) it can burn around 600 calories per hour, improve coordination skills and tone legs.