Popsugar Fitness Workouts 15 Minute HIIT Workout at Home Drop What You're Doing — This 15-Minute Full-Body HIIT Workout Requires ZERO Equipment June 20, 2019 by Samantha Brodsky View On One Page Photo 2 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Jumping Lunge Stand with your feet together and your knees soft. Jump into a lunge with your left leg forward. Push off with both feet and hop into a lunge with your right leg in front, switching your legs in the air. This counts as one rep. Continue to alternate your lunges for 30 seconds. Then rest for 20 seconds. Previous Next Start Slideshow WorkoutsBodyweight ExercisesHIIT