I am a 56 year old man. I am very active however I was loosing my muscles and my libido which resulted in me thinking I am just getting old. To my surprise, I began taking Advance Amino powder which has now rebuild my muscles !! and have me competing with my calestenics youths in their twenties. My libido energy and performance are like my early teenage years and twenties. Numerous young athletes told me they want to be like me when they grow up. My response is , take Advance Amino powder, its better than Protein powder that was not getting me the health, vitality and muscular strength I needed.