Popsugar Fitness Workouts Easy 30-Minute Workout This Is the Easiest 30-Minute, Equipment-Free Workout Ever — No, Seriously June 25, 2018 by Laura Arndt View On One Page Photo 7 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Side Plank Target Muscles: Obliques. Start in a side body position with your hips stacked. Come up on to your elbow and raise your hips off the mat. Continue to hold for 30 seconds, then repeat on the opposite side. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight WorkoutsBeginner Workouts30-Minute WorkoutsFull-Body Workouts