Abdominal Workout Cable Rope Crunches - 45lbs 25 reps x 4 sets • set pulley to its highest position, attach the rope, & hold it spread apart by your head. Get on your knees while holding the rope in this position. Now lean forward bringing your elbows towards your thighs until your abdominal muscles are fully contracted. Hold in this position for 1 second before slowly rising up, to an upright position with your torso. Take a breath, & preform another crunch. Make sure to sustain good posture, &