Popsugar Health & Fitness Body Weight Laurie Hernandez HIIT Exercises Olympic Gymnast Laurie Hernandez Shares Her Favourite HIIT Exercises to Do at Home 6 July 2019 by Samantha Brodsky View On One Page Photo 1 of 2 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Jump Squats Begin in an athletic stance with feet shoulder-width apart and arms bent with hands at chest level. Bend knees and come into a full squat. Jump up as explosively as you can, reaching for the ceiling. When you land, lower back into the squat position to complete one rep. Previous Next Start Slideshow Body WeightGymnasticsAthletesHIITWorkoutsPopsugar Interviews