Tis the season for comfort food, skipping our daily exercise because its cold and wet, and warm clothes. But it could also be the chance to turn around the slow slump many of us experience in winter.

Curves is a circuit workout that take 30 minutes, in an all female gym. The idea is you do it three times a week, and that's all you need to tone up and get in shape. You can grab a friend and do it together to stay motivated, or go for it on your own.

As a special offer for sphinxx members, you can get one weeks free membership to try it out. For all our members, all you need to do is log in to our member area, download the voucher and get started.

If you are not a sphinxx member and would like to join up so you too can access all our member benefits... click here to register today for only $77 per month.