Popsugar Fitness Workouts Five-Minute Back Workout Posture Perfect: The Best 5-Minute Back Workout December 25, 2015 by Emily Bibb View On One Page Photo 3 of 5 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Number Three: Pilates Mat 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, then alternate sides, making a fluttering motion. Continue this movement for one minute. Previous Next Start Slideshow WorkoutsStrength TrainingBodyweight WorkoutsIntermediate Workouts5-Minute WorkoutsBack Workouts