I'm getting older. I've hurt my shoulders a few times. My back is fubar. Joints are achy and stiff. I'm using mostly dumbbells and avoiding low rep/heavy weight. For shoulders I'm doing 5 sets of ten reps for front shoulder raises, and the same for side shoulder raises. When I can complete ten reps on the last set, I repeat the weight the next time, but pause at the top for a one count. When I get all my reps that way, I go for a two count. At this point, I up the weight and start the cycle over. I'm doing shoulders twice a week. I've been using this scheme for about four weeks now. So far the shoulders feel good, and I'm comfortable with my progress. Any thoughts or feedback?