The Gymstick was developed in Scandinavia, where it is used very successfully among others in rehabilitation. Depending on the exercise says the training of different muscle groups and promotes strength, endurance and coordination. Sure it's not cheap and with interchangeable bands it would have been better to at least zusparen costs, but it is effective in any case. To really work effectively so that it is not wrong the advice of an expert, such. As a physiotherapist or sports trainer or catch.