I think it was some kind of sports manga but not sure. The only part I remember was that there was this "death island" or something like that..it was a training camp where everyone had harsh training schedules. There was this part where the main character had to raise up this heavy weight for a long period of time. The coaches all worked the main character especially hard for some reason that I don't remember. Well, I'd like to read the manga again, help appreciated! Thanks!

I think Major had a hard training camp, dont know if it was an island, but Goro did get to lift weight for a while and had it harder than the others. But this kind of situation is not uncommon in mangas, remember anything about the characters?

Definitely sounds like Major, but I only saw the anime.