Popsugar Fitness Workouts HIIT Bodyweight Workout The Ultimate HIIT Workout For Weight Loss — No Equipment Needed September 25, 2018 by Jenny Sugar View On One Page Photo 7 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Up-Down Plank Begin in a full plank. Lower your right elbow to the mat and then your left, coming into an elbow plank. Put your right hand on the mat, and straighten your right elbow. Do the same on the left to return to a full plank. Keep going for 30 seconds, then rest for 30 seconds. Previous Next Start Slideshow WorkoutsBodyweight WorkoutsHIITHIIT WorkoutsIntermediate Workouts20-Minute Workouts