I haven't tested my limitations yet, but I probably need too. Just been easing back into lifting since I quit nicotine a week and one day ago, today. I got a small home gym so I've been doing butterflys, military press, leg press, etc.. I don't power-lift or anything. I aim for a weight thats 3/4's my threshold and rep till failure.. I know my builder buddies always give me crap because they have these "scientifically" proven routines and such.. I get results though, and my muscle endurance is far superior to those. And.. I've noticed that while I havent seriously dedicated to lifting in about 2 years, I've retained a good amount of my muscle definition.. I could be cut and looking pretty sharp with about a month and a half of work. If they quit or just get sick for a few weeks, their bodies turn to mush.. I'll stick to my method.