Excuse the back ground techno....that how I roll at 4am. . Here is a great easy isometric for restoring trunk rotation. In this vid I hold my spine neutral, a flexed spine and an extended spine would also be great options to cover all the bases. . Another option would be to spine around and have my back to the wall. That position would draw in more spinal extensors vs flexors. . Lots of options here. . Could your lack of trunk rotation one direction be the issue with your shoulder? Worth taking a look! . . . #correctiveexercise #correctiveexercisespecialist #lowbackpain #prehab #movebetter #functionalmovement #manualtherapy #fitnesstek #tampafitness #achesandpains #chronicpain #odessafl #rangeofmotion #flexability #muscleactivationtechniques #painrelief #fullrangeofmotion #livepainfree #workoutsmarter #workoutsmarternotharder #fitnesstek #workouttips #exercietips #smartexercise #fitnesseducation #tampabayfitness #tampabayfit #tampahealth (at Fitness-Tek -Tampa's Only, Master MAT Specialist & Personal Training Center)