Some background... I just found this forum I'm 65 years old and usually work out 5 or 6 days a week. Generally I do circuit weight training and cardio on alternate days. In the summer I ride my bicycle anywhere from 20-40 miles a day, 3 or 4 days a week and lift on alternate days. Last summer I started doing heavier weights on the bench, squats, military press, curls etc. etc. The over the head presses injured my rotator cuffs in both arms. Fortunately I didn't tear them but it took 6 months of rehab to get me back lifting again. I've been doing lots of reps with low weight (nothing over my head) since around Christmas and last week started increasing the weight. I'm trying to build back up where I was last summer. The thing is I'm tired and sore most of the time. At 65, while I'm in the best shape I've been in for 30 years, I don't recover very fast any more. I've never been one to take any supplements including vitamins but I'm willing to try if they can help me build muscle and/or recover quicker. Any suggestions?