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1) Britney Spears (1 of 10)
1) Britney Spears (1 of 10)
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The iconic pop star and mother of two is in the best shape of her life thanks to her hardcore workout routine. Cardio and weights for 45 minutes a day, generally 20 minutes of intense cardio, and light free weights, followed by body-weight exercises, and a light stretch. With the addition of lap swimming and power yoga sessions, Britney is looking better than ever!