Along with the neck and shoulders, you have to consider the hips and legs...most of us past 60 sit a LOT and I notice that my hip flexors are very tight. I have even begun to bend forward without meaning to...the best exercise for all this is to try to get on the ground, lie flat and just stretch, something like a baby in a crib...turn and stretch and listen to your body...some excellent and gentle body work will be found by going to YouTube and looking up Feldenkrais. Here's one link I like.
https://www.youtube.com/user/2stunden