Score stronger, leaner, more amazing legs with this 12-minute strength workout based on trainer Jewel Elizabeth’s ROCK SOLID: LEGS class, taught at Equinox Fitness Clubs in New York City. Do this workout 3–4 times a week and add fat-blasting cardio, and you’ll ditch up to 2 inches from around each leg in 4 weeks, plus give your butt a boost.

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