15-Minute Workout: Take Hold of a Hot Bod
The secret to shaving time off your workout without sacrificing results: doing dynamic combo moves that target at least two muscle groups (think quads and biceps) in each rep, says Paul Katami, group fitness manager at Equinox fitness club in West Hollywood, California, who created this routine. "They are great time-savers and also challenge your stabilizer muscles, which help improve core strength and balance."
While you can use a dumbbell for these moves, a kettlebell's weight isn't evenly distributed, so your muscles have to work harder to steady the bell with each lift or swing.
Three or four times a week, do two sets of this circuit with an eight-to 10-pound kettlebell. Complete the prescribed reps of each exercise, moving from one to the next with little or no rest.
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