Madonna and Gwyneth Paltrow are rumoured to use Callanetics - and

Followers claim that the lifting and tightening effect of one hour of the U.S. fitness fad is equal to 20 hours of aerobics.

From Madonna to Gwyneth Paltrow: The LA work-outs that will fast

Out with the old, then Madonna gets the girls round

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

Gold Coast Callanetics testimonials

Gwyneth Paltrow and Beyoncé Have Apparently Fallen - Lorcan O

Here are Callan Pinkney and her seventy-six-year-old mom. They're

Gwyneth Paltrow and Beyoncé Have Apparently Fallen Out BIG Time

Madonna's MANY feuds exposed - including spats with Gwyneth, Cher, Elton, and even Kevin Costner

Madonna And Gwyneth Paltrow Turn Out For Yoga Charity 'Bent on

In Praise of Chaotic Workout Attire

Gwyneth Paltrow Latinoamérica - #gwyneth #gp #goop #g

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

Gwyneth reignites feud with Madonna, says she's got a better six

Gwyneth reignites feud with Madonna, says she's got a better six

Gwyneth Paltrow Has Better Abs Than Madonna and Everyone Knows It