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When it comes to burning a lot of calories in little time, try Tabata. It's a form of high-intensity interval training (aka HIIT) that alternates between 20 seconds of max training and 10-second rest periods for a total of eight rounds. These workouts are fast-paced and fun. This workout is made of two Tabata sets, plus a short warmup and cooldown. No equipment is necessary, and we keep track of the timing. So what are you waiting for? Press play, and get your sweat on. Looking for a longer workout? After completing this video, try another 10-minute Tabata workout for 20 minutes of fun!

You're busy, and the American College of Sports Medicine knows this, so it created a seven-minute, high-intensity workout for you to squeeze as much sweat as you can out of a short exercise session. To truly reap the benefits of this fitness quickie, the ACSM recommends doing three reps of the workout. Get prepped with a mat and chair, since there are some step-ups coming your way. Press play and follow along as we lead you through the 12 moves.