Share the secrets of young-at-heart celebs

Twiggy, 60, supermodel

The secret? Variation is key.

OK, she may have good genes on her side - but Twiggy has worked hard to keep her body and health in tip-top condition. But working hard needn't mean toiling away in the gym: Twiggy keeps things enjoyable and interesting by varying her fitness routine to include Pilates, tap-dancing, swimming and long walks along the Suffolk coast with husband Leigh Lawson. And what about her diet? ‘I eat healthily, I don't eat fried food, and I'm lucky to be married to someone who doesn't like dessert, so I just have a bar of Green & Black's in the fridge for when I need my chocolate hit,' she says.

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