Over time, your body will learn your most consistent emotional patterns and habituate a certain posture. But any habit can be changed. A sattvic Yoga asana practice is the tool for this re-education.
While you won’t find shoulder shimmies in the traditional texts, this pose is very much a remedy for the modern ailments that come from working on a computer or driving in cars, or to let go of emotional baggage in the anahata, or heart chakra.
This is one of the few asana in which you should keep going even if you want to stop. Energy moves the more you move it, and practicing shoulder shimmies regularly will open up space in the energy channels in your upper body and improve your mental focus. Aim for three minutes, but if you experience sharp pain in your joints, start with less time and work your way up. It’s nice to smile at yourself during this practice!