IdK man, I guess I train as much as I want because I know my body can take it. I've played competitive sports all through my life so...I'm just conditioned differently than most. I know my limits, so I tread softly. I definitely feel you on the injury/burn out/plateau part of it, no doubt, but I think even beyond the actual science, you must also know your own personal 'can and cannots'. Every rule of thumb is generally speaking. Before every workout, while I'm stretching and on the foam roller I'm doing mental and physical checklists of my body, taking every ache or pain, or lack thereof into account. Plus I'm getting great nutrition, and I rehab my body regularly with massages, yoga, hot tubs, saunas, the occasional ice bath, etc. So I mean I'm taking precautions and whatnot. I'm not just trying to be a big guy, I want to be in great shape overall, and functional.
nah bro, I got it in. Did legs, 12-45lb plates on leg press, 2-45lb dbs on walking lunges, not too heavy on dead lifts and some quick but tough calf work. My body felt great, I couldn't just sit still at home. Went and knocked out a quick hour. I'll chill tomorrow.