Weightlifting since 2000 and still going strong, I have to eat a lot of bioavailable protein, at least 160 grams a day. About 3 days a week, I replace the fish on my lunch salad (to avoid mercury and purine) with tempeh and to insure I'm getting complete bioavailable protein, I like to take an amino acid supplement. MK 677 is a potent amino acid supplement to help me in my muscle maintenance and recovery. good stuff. good life. good service and good delivery. awesome guys and thank you for supplying me. I highly recommend their products, I will assure you you will be happy.