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Sprinting requires three things: strong muscles in your legs and arms. A good cardiovascular system to help transport oxygen to the muscle groups that are doing all the work and some endurance so your muscles don’t cut out after that first, initial...

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The Ultimate 23.5 Minute Fat Burning, Ab Sculpting Sprint Workout - Great for building speed, burning body fat and toning the legs and abs! #runningworkout #sprint More at LiftingRevolution.com

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