Basically this, the universe can have qi, energy cultivation systems or whatever, but mc only cultivates the body and not qi. Although I guess if he has 2 bodies like Renegade Immortal and each cultivate separately then thats fine, thought its a rare exception.
Closest I can think of is Stellar Transformation where he starts out unable to cultivate inner qi, so trains the body, but by the time the story really starts going thats no longer the case (although he has an abnormally strong body throughout the story)
Already read them all, also ISSTH doesn't really qualify since mc trains in dual cultivation(qi and body) not just body
Not really looking for muscle men, but more so just cultivating the body to the point where they can shatter the void and whatnot. I know, that I can see this in practically most wuxia/xianxia but they also cultivate energy which essentially makes stories longer since they have to spend time talking about both systems, constantly going from one to another.