Popsugar Fitness Workouts 20-Minute, No-Equipment Circuit Workout This 20-Minute, No-Equipment Circuit Is Clutch When the Gym Is Just Too Crowded December 1, 2018 by Colleen Travers View On One Page Photo 7 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Plank Saw Get into a low plank position, by placing your hands directly under your shoulders and then lowering so that your forearms are on the ground. On your tiptoes, rock back and forth (like a hand saw), extending as far forward and backward as possible. Previous Next Start Slideshow WorkoutsStrength TrainingCardio WorkoutsGym Culture20-Minute Workouts