This is an advanced exercise for side and upper abdominals.
Lie down on your back, and place hands on your chest. Your feet are on the floor and knees are forming 30 degree angle.
Slide to the side, stay there for a second, come up to the side, then to the centre and back down to starting position.
You will be making a square movement with your body.
Breathe in when relaxing abdominal muscles (when returning to starting position) and bre