I think it's kinda weird that he's at the stage where he's using tren and doesn't realize the importance of training legs not only to be keeping everything uniform, but I have also heard that training legs helps release your natty test which in turn wil help him when off gear. I'm just saying it can be frustrating enough to train when coming off gear, and I don't know about you but when i'm coming off I like to do anything I can to get the natty back in order. I used to hate doing legs but love it now, it seems to make me feel more complete in my work outs. Shit I started doing legs without any direct training on calves, and like these other guys said you could run into other issues with your body's inability to keep up with the muscle groups that are growing at a rapid rate, tendons, ligaments, cartilage, etc. Now if there's an issue where he CAN"T train legs then disreguard this statement:)

Slap him, I'm through with him and don't even know him yet! Our relatiionship is like reverse Deja Vu, when I see him I kinda get the feeling this never happened once before! Lol

Well besides the fact that he's gonna look weird if he ever takes his pants off I'd say possible knee issues from not being balanced and so top heavy. Man I used to make excuses all the time to get out of legs but now that I actually started training them correctly I love it!