Popsugar Fitness 1Six8 1Six8's 23-minute HIIT Workout This 23-Minute HIIT Workout Will Get You Trim and Make You Look Younger 3 April, 2017 by Linda Cochrane View On One Page Photo 1 of 13 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Jump Squats Start standing with your feet hip-width apart. Bend your knees to touch the floor while keeping your back straight. Previous Next Start Slideshow 1Six8HIIT WorkoutsExerciseHIIT