Popsugar Fitness Under Armour 20-Minute Booty Burn Workout Try Under Armour's 20-Minute "Booty Burn" Workout to Enhance Your Derrière August 30, 2021 by Angelica Wilson View On One Page Photo 1 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Side Lunge Stand with your feet together and your arms by your sides. Step your right foot directly out to your side, bending your knee and pushing your butt back as you go. Keep your left leg straight and stationary. Push off of your right foot, straightening your right leg and returning to start. Repeat on the same side for 20 seconds, and then switch to the other leg for the final 20 seconds. Rest for 10 seconds. Previous Next Start Slideshow Under ArmourWorkoutsStrength TrainingHome WorkoutsBodyweight ExercisesBodyweight WorkoutsButt WorkoutsButt Exercises20-Minute Workouts