So I'm at a plateau that I've been at forever, and I'm trying to get past it and see gains again. I want to switch up my routine. I hardly Ever get sore anymore.....I haven't for probably over a year. I've been doing alot of strength training and am currently doing alot of 4-8 rep exercises. My question is if I do high rep (15-failure,) will that be a good switch to help my body grow (mass and strength)? My diet and everything is in check, I just need something to shock my muscles again since they've adapted to everything I do. Comments?