Popsugar Health & Fitness Workouts Total-Body Conditioning Workout Want to Burn Fat and Build Muscle? Start With This Trainer's 30-Minute Total-Body Workout 10 January 2019 by Tamara Pridgett View On One Page Photo 7 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Part 2, Exercise 3: High Knees Hold your hands at waist level. Hop the right knee up toward your hands, then quickly switch legs and hop the left knee up. This counts as one rep. Complete 15 reps. Previous Next Start Slideshow Trainer TipsDumbbell WorkoutsIntermediate WorkoutsFull-Body Workouts30-Minute WorkoutsStrength TrainingWorkoutsPopsugar Interviews