Anthony, my guess is your body and age have merged and you’re beginning to develop symptoms of aging. All of our bodies breakdown over time with some faster than others. You seem to have found a way to continue to function like a much younger person (hard baseball) but your body is now talking to you. Best to listen to your body. It may be hard to face for someone who has had a very active retirement life. PT is a fantastic modality and worth every penny. They are my go to when my aches and pains become too much.