EXINN PatentsSystem and method of exercising and stretching the torso muscle groups of the body, using as its main force resistance, the weight of the user October 2, 2018October 2, 2018 - by gtomco - Leave a Comment Loading... Taking too long? Reload document | Open in new tab Download [480.13 KB] Google Patents Link: https://patents.google.com/patent/WO2014083365A1