Popsugar Fitness Workouts Beginner HIIT Workout New to High-Intensity Interval Training? This No-Equipment Workout Is Only 20 Minutes June 20, 2018 by Jenny Sugar View On One Page Photo 5 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 Air Squat Begin with your feet slightly wider than hip-width apart and toes pointed slightly outward. Keeping your weight in your heels, sit back into a deep squat as you raise the arms overhead. Make sure your knees do not go beyond your toes. This completes one rep. Previous Next Start Slideshow WorkoutsCardio WorkoutsCardioBodyweight ExercisesHIITHIIT WorkoutsNo-Equipment Cardio WorkoutsBeginner Workouts20-Minute Workouts