Years before doctors were learning a new truth about naturally healing the body, Joseph Mercola, DO, was already leading the trail. People who follow Dr. Mercola know that he is the voice of natural, functional, integrative, and holistic medicine. I had not seen Dr. Mercola for about a year but there was something truly different about him… all the muscles on his body. He looked healthy and strong! I could not help myself and asked if he would share how to build muscles after 50! (I am sure this information is applicable if you are under 50 as well.)