This move not only strengthens your legs and chisels your core but also fires up your hard-to-ignite fast-twitch muscles. Better yet, a few sets of ninja jumps with a sandbag throw tossed in make for a total-body workout in just a few minutes. Try three sets of five reps and you'll feel the burn all day long.
health & fitness
The 5-Minute Full-Body Workout
Master the ninja jump and get ripped—fast.














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