Metric Miler wrote:
I clearly said that overweight and underweight people obviously exist. And, of course, an overweight kid is not going to make a good marathoner, in his current state. But if he lost a few pounds and started training he might. The endomorph term suggests he is stuck as an overweight kid because he was born like it.
The terms you are using suggest that a person who is currently overweight would have trouble gaining muscle because they are an 'endomorph' and only the 'mesomorph' types can gain muscle well. Just not true. The person could easily just be lazy. A person's genetic ability to build muscle or be better at endurance events is not easily determined by looking at them.
You are an utter idiot. You might just as well say that tall people and short people "don't exist," or that blue and brown eyes "don't exist."
Yes, people are to a large extent "stuck" with different body types. When I was 6'1 and 135 pounds in 10th grade and my friend was shorter and an utter house at over 200, I promise you that it was not just because of minor differences in our diet. (And no, I wasn't running then.) IT IS BECAUSE OF GENETICS. When I did the exact same weight program as my roommate and he gained 30 pounds of muscle while I gained 5, it was not because he had better protein shakes. IT IS BECAUSE OF GENETICS.
I'm sorry if you don't like the terms ectomorph, mesomorph and endomorph. If they are too "old fashioned" or you don't like that some moron once conflated them with personality, you can feel free to hop on the treadmill of euphemisms if you want to call them something else (just like you probably have with whatever you call people of various ancestries). But as categories reflecting something called reality, they very much "exist."