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Besides the strengthening and the stretching, the Fit-ball can also help correct the incorrect posture and together with the E-Fit device the deep muscles – including the deep back muscle – can be superbly trained. As you have to keep your balance during the exercise, therefore besides the targeted muscle group the spine straining and torso straightening muscles are forced to increased work in comparison to the traditional exercises. With the help of the giant ball the abs and deep back muscles can be developed in their whole function range.

Lie down into prone position onto the ball, place your feet onto the ground in a straddle somewhat wider than shoulder width. Your hands should be next to your ears and your head is the extension of your torso. Lift your upper body upwards, then let yourself down to the starting position and repeat this exercise until you get exhausted.