A Pilates instructor demonstrates how to 'turn on' your abs by

Pilates instructor Karlie Andrews, from Brisbane, said there is a very good reason for
Pilates instructor Karlie Andrews, from Brisbane, said there is a very good reason for 'sucking it in', and it can be as effective as doing hundreds of sit-ups a day.

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A Pilates instructor demonstrates how to 'turn on' your abs by

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