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How to do an around the world exercise with an exercise ball
Find a soft surface, like a collection of yoga mats.
Put your exercise ball in the middle of this surface, making sure there's plenty of space around it for this exercise.
Kneel facing the exercise ball.
Lean forward so that your upper torso touches the ball, and slowly roll so that your thighs start to roll onto it. Touch down with your arms on the other side of the ball and lift the rest of your legs off the ground.