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Tara Palmer-Tomkinson and Sharon Marshall have had their fair share of life's little grenades. Now they've learned how to throw them back. To live the good life, it helps to be bad sometimes. So this is their take on alternative weight-loss methods.

All that running and weight-lifting does work - but it's a little dull.

Here are some sure-fire everyday weight loss methods:

Buy cars without power steering: Simply drive around until you find really tight parking spots then spend half an hour straining at the steering wheel and you'll undergo the equivalent of a full workout as you park your car.

Turn the heating up: Whack the central heating up full strength and go to bed in your ski suit and thermals. You'll sweat out at least a pound a night.

Always have your watch ten minutes late: This will ensure you're always in a hurry. Spend your day stressed and rushing from one place to the next in a hurry. Tara manages this seamlessly. She's on New York time anyway.

Buy a penthouse: Remember the higher you go, the more you'll burn off staggering up to your flat at night. This is why supermodels never live in ground-floor flats. You can have any amount of hollandaise if you live in a penthouse.

Tara Palmer-Tomkinson

Hang out with rugby teams: The boys are so big you'll automatically look small and thin next to them. If you can't find a rugby team then just join the slimming club, make friends with people who are bigger than you and hang out with them instead.

Hang out with Smug Couples: They always make you want to vomit.

Use public transport in rush hour: We recommend the Northern line if you're in London. It's always packed and breaking down and you're guaranteed to emerge sweaty, stressed and thinner.

Order seafood all the time: If you're lucky, you'll get that dodgy oyster or the mussel that didn't open properly and should lose a stone over the next two hours.