This product help to build and keep muscle mass after your workout. I did not use it, as I am disabled. My husband did. All athletes can use it as the ingredients in it are all on the can use list of ingredients. Non are banned. Regenerate your muscles after you workout. Keep building muscle mass, don't lose it. Build it faster with Regenerate. It is available from Elivate Fitness for $38.36: http://bit.ly/1MxFxgV.