Everybody doesn't look like a bodybuilder because not everybody is on gear that's why. Steroids is not easy for everyone to find or many more people would be on it believe that. If you knew anything about biochemistry you would understand that nothing you do really is willpower. That is a cultural construct. Science teaches us to know better than that. If I only but adjusted your myostatin level I could make you into a larger assortment of muscles than any body builder could ever be without you dieting one iota or working out at all and if I adjusted your myostatin levels the other way I could make you look like the wimpiest geek to ever live no matter how much you work out and diet. That is biochemistry. It is scientific fact. Hgh, testosterone, and thyronine play a role in muscle development as well, along with protein, creatine, l arginine, glutamine, along with a whole host of mineral, vitamins, chemicals, hormones. Hormones and neurotransmitters such as norepinephrine, dopamine, serotonin, endorphins and others give you your so called willpower that you put so much importance on like it's a choice or a characteristic that is special and particular only to you. I'm sure you are a well intentioned person and a good person but you could benefit from learning a little bit about biology, chemistry, anatomy, physiology, molecular biology, biochemistry, physics, genetics, engineering, psychology... to get a better understanding of how things work and why people work the way they do. I understand that your argument is probably that I need to learn a little bit about kinesiology and nutrition. I do understand it rather well actually. I mean I don't have a degree in it but I understand the concept of diet and exercise...