Best butt shaping

A squat machine looks like something taken out from a medieval torture chamber – and feels like it! But it's the best butt shaping AND best fat burning exercise there is. I like to do it in a pyramid style:

1X15 reps
1X12 reps
1X10 reps
1X12 reps
1X15 reps

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You know what they say: If it doesn’t challenge you, it doesn’t change you