Nothing tones muscle and torches calories like fast-paced circuit training.

Just because beach days are dwindling doesn't mean your workout has to. These four total-body cardio blasts, designed by Kristin McGee (private trainer to LeAnn Rimes), burn fat and tone muscle head-to-toe. Do the moves in order with no break. That's one circuit. Repeat twice, with a minute rest between circuits. Do the workout two to three nonconsecutive days a week, and your summer body will last all year.



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