<s>[INST] Have severe pain in T6/7 vertebrae and shoulder pain. Been doing the tennis ball pressure point massage. This turns the tennis balls in to egg shape. My muscles contract and relax and never stop doing so. It does help soothe the pain but why are my muscles doing this and will it be a problem in the long run. Fyi...was injured in rear-end car accident 2005 and will be having cervical disc surgery in 2 months. [/INST] Hi...The problem is due to less movement in thoracic vertebra.In addition to tennis ball point massage I recommend you..to doLot of icing frequently ...Roll a foam roller in your back byvlying on too of it with your back..go for back arches..while doing slowly move upwards and downwards..along the thorax...cat and camel exercise will help to maintain the mobilisation...Hope this is helpful for you..Kindly revert back in case you need any further clarification... </s>