Madonna and Gwyneth Paltrow are rumoured to use Callanetics - and the exercise is set for a comeback

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Madonna's MANY feuds exposed - including spats with Gwyneth, Cher

Crunch time for Madonna and Gwyneth Paltrow in battle of the gyms

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Gwyneth Paltrow and Madonna leaving their gym London, England

Crunch time for Madonna and Gwyneth Paltrow in battle of the gyms

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Madonna's MANY feuds exposed - including spats with Gwyneth, Cher

Madonna and Gwyneth Paltrow are rumoured to use Callanetics - and