Serena Williams does Pilates to lean out her body.

Lately, Williams has become the queen of lean. After she won the Australian Open in January, “I wanted to get really fit. I wanted to lose some weight. So I’ve been doing Pilates and yoga, trying to lean out my body so I won’t be bulky.”Her regimen: Pilates two or three times a week, and when she’s training for a tournament, a couple of hours of hitting.”

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