Popsugar Health & Fitness Charlee Atkins Plan 20-Minute Cardio Workout From Charlee Atkins This 20-Minute Workout Feels So Good, You'll Almost Forget You're Burning Calories 24 February 2021 by Colleen Travers View On One Page Photo 1 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Knee Drivers Bend your left knee and extend your right leg behind you, placing little to no weight in the right toes. Raise both hands straight above your head. Drive your right knee up toward your chest, bringing your hands down to meet it. Reextend the right leg behind you as you lift your arms back up. Continue for 20 seconds on this leg, then switch sides for the remaining 20 seconds. Previous Next Start Slideshow Charlee Atkins PlanTrainer TipsNo-Equipment Cardio Workouts20-Minute WorkoutsCardio WorkoutsWorkouts