kayrob wrote...
I have to disagree with this too. A good example of genetics defining class is (American) football. There's a good reason why wide receivers are tall and wiry, linebackers look like tanks, and running backs are more compact and powerful. Respectively, it would be difficult to complete a high pass while keeping both feet in bounds while you fall out of bounds, or protect your quarterback, or make explosive cuts/turns if your body wasn't designed to do it.
It's not lost on me that I keep using sports references by the way, but they do provide excellent examples of body/class specialization.
Which is essentially
why people in that sport train in the gym to bulk up and strengthen their muscles. Genetics are one thing, training up and bulking up is another. I hate this mentality that "if you don't got the genetics, it therefore means you aren't meant capable of accomplishing the said task. "
Training your body allows your body to become stronger, take much more resistance. Genetics are simply just one factor, its true they DO play a role, but they aren't "the end be all". This is the reason why so many people can never dedicate themselves to training to bring out their full potential because they believe in Genetics too much.
And look at people like Bruce lee, he isn't as large as a bodybuilder nor is he as large as a an american Footballer and he is an accomplished fighter who conditioned his body.
Hell look at my friend, before training in the gym for the next 10 years he was very skinny and only weighed a mere 120-130lbs, and look at him now:



The last picture was him in the off season, taken recently.