Flexus appeals immensely to teenagers. With its swaying, swinging movements, it gives immediate physical response that teenagers love. When standing on the footrest, holding the support bars and swaying the lower body back and forth, teens train the ABC of motor skills: agility, balance and coordination. The sense of balance is fundamental for all other motor skills. During tween and teen years, due to growth spurts, the sense of balance takes extra training. The Flexus provides playful training of the sense of balance, and the agility. The movements resemble skiing movements and train leg, core and upper body muscles. The teenagers additionally make lots of positive competition on the Flexus. They teach peers new skills and train turn-taking and negotiation.