Nothing would motivate a morning cardio workout more than running side by side with a hot female celebrity, like Jessica Alba, Kate Upton, or Scarlett Johansson.
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16. Rachel McAdams
This Wedding Crashers actress is all about biking and yoga. She practices Kundalini every morning in order to warm up for the miles she runs every day. Her strength-training coach, Jerry Owen, keeps Adams workout focused on shorter bursts of exercise with higher-intensity circuits.
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