by John Knight The toughest secret how to build muscle fast is hard regimen and self-discipline. That is the Spartan way! You must good diet and good heath to do this so you have the strength, stamina, endurance and power. You must have a hardcore diet to build natural muscles craved out of your strong and healthy body. You can always control your physical appearance and those dense functional muscles will make you look awesome. You can be proud to take off your shirt at the beach anytime t