Popsugar Fitness Workouts Bodyweight Core Exercises 12 Easy-to-Follow Moves That Chisel Your Core August 6, 2015 by Lizzie Fuhr View On One Page Photo 12 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 12 Swimming Begin on your stomach with your arms extended in front of you. Keeping your neck neutral and in line with your spine, lift your feet, arms, and chest from the floor. Begin to "swim" by lifting your opposite arm and leg a little higher, and then alternate sides, making a fluttering motion. Continue this movement for 30 seconds to complete one cycle. Previous Next Start Slideshow WorkoutsStrength TrainingAb Exercises