My short term memory is better when I exercise regularly. Obviously the greater blood flow during exercise helps a lot of organs in the body, including heart, brain, kidneys, muscles and lungs.
My hip pain disappeared after taking up golf. I thought I was going to need hip replacement. Ditto with back pain.
My theory is when muscles get weak, more load is borne by bone joints. That wears out the lubricating cartilage.
Try collagen gelatin. . .the kind that goes in anything. . . hot or cold. Sugar is a killer for joints also. Have you tried some Food Grade DE?
I discovered Dr. Axe (draxe.com) during a Wellness Summit put on by WellnessMama.com Worth going to both sites.