Gwyneth Paltrow, Madonna, Penelope Cruz and Sarah Jessica Parker are said to use the Tracy Anderson Method to stay in shape.

Durban North-based personal trainer Jane Kilian, better known as GI Jane, tested it out.

Gwyneth Paltrow, Madonna, Penelope Cruz and Sarah Jessica Parker are said to use the Tracy Anderson Method to stay in shape.

Durban North-based personal trainer Jane Kilian, better known as GI Jane, tested it out