Kettlebells
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TWICE THE RESULTS IN HALF THE TIME ?

Exclusive research from the American Council on Exercise examined the fitness benefits of kettlebell training. With kettlebell enthusiasts making these all-encompassing claims about increasing your muscular strength, endurance and aerobic capacity faster and more efficiently than any other fitness regimen available, ACE set out to analyze the energy cost and exercise intensity of kettlebell workouts. Enough said.......read for yourself.

http://www.acefitness.org/getfit/studies/kettlebells012010.pdf