Well I leave here, a table that can serve both to recover and to strengthen the shoulder and shoulder girdle is known.
In this table, you only need to vary the level of the gum, which can be rubber or theraband tube, which according to the level you are working you can give a specific charge current and according to the objectives we seek.
eg. work for janitors, in which power works and prevention of possible injuries or charges caused by the technique of removing or by the repetition of consecutive declines to make jamming at medium and low altitudes.
