Hello, My name is Anthony, I am 64 years old and have been using Advanced Aminos for a couple of years now. I find that combined with a sensible diet and exercise routine, this product enables me to add and or maintain your muscle mass and strength. Workouts are required if building additional muscle mass is desired, taking Advanced Aminos without a resistance exercise program will help to slow down the natural progressive loss of muscle as we age, very important for a more active lifespan. I highly recommend Advanced Aminos.