Mark McManus is personal trainer who runs MuscleHack.com, a no b.s. blog with ~65,000 free subscribers at present. He has also written for major publications like Iron Man Magazine and Perfect Body Magazine. He specializes in coaching people on how to build muscle the scientific way. You can grab his full and free T.H.T. weight training program here and join tens of thousands of others who have transformed their bodies for free. To really succeed, however, you also need to get your diet right. Mark also offers readers his free G.L.A.D. bodybuilding diet, which will help you pack on muscle in a truly healthy way and ensure you are getting the correct amount of protein per day for gaining muscle.