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.

Callanetics: Results Diet inspiration, Fitspiration, Fitness diet

Inside Madonna's Friendship With Gwyneth Paltrow

Gwyneth Paltrow Ended Her Friendship With Madonna For This Reason

Gwyneth Paltrow and Madonna new gym buddies

In Praise of Chaotic Workout Attire

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

Gwyneth Paltrow Ended Her Friendship With Madonna For This Reason

Gwyneth Paltrow Ended Her Friendship With Madonna For This Reason

AM/PM Callanetics (Official DVD)

Gwyneth Paltrow and Beyoncé Have Apparently Fallen - Lorcan O