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    The Most Effective 20-Minute Workout

    By | Healthy Living – Tue, May 8, 2012 11:28 AM EDT

    Gabriel Valencia, founder of NYC's Focus Fitness and trainer to some of Manhattan's busiest power players, shares an office, home, or hotel-room regimen that burns about 100 calories in 20 minutes. By Joanne Chen

    marie clairemarie claire60 seconds: Sprints up and down a flight of stairs, two steps at a time if you can.

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    60 seconds:     High knees (like a fast, bouncy, knees-up-to-chest march-in-place)

    60 seconds:     Simulated jump rope.

    40 seconds:     Squats, then a 20-second rest.

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    40 seconds:     Jumping jacks, followed by 20-second rest

    40 seconds:     Push-ups, followed by 20-second rest.

    40 seconds:     Split squats (one foot in front of the other, about a foot apart; squeeze glutes and bend knees-back knee dips to floor), 20 seconds each side, then a 20-second rest.

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    40 seconds:     Mountain climbers (bend over, place hands on floor a couple feet in front of you, put one foot in front of other, then jump up and land with opposite foot in front; switch at fast pace), then rest 20 seconds.

    2 minutes:     Rest (check your e-mail if you must!), then repeat.

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