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This Is the Workout You Should Do to Burn Fat and Build Muscle (Hint: It's Not Weightlifting)

Want to tighten your butt, get more definition in your legs, sculpt your core, and improve your strength and stamina? Sprinting will help you achieve all the above. To learn the basics of sprinting and why it’s great for building lean muscle, POPSUGAR spoke to Ato Boldon, four-time Olympian and NBC Sports lead track analyst, […]