I have been liftin very heavy for the last 15 years or so ("very" was always relative for my ongoing strength level, but it was always on the dge of my abilities. But last 5 years or so - not many can keep up with me.). Not a single ache (at least for now). I guess one of the reasons - very throughout warm-ups, religiously, each and every workout. All covered for my joints to feel warm, summer or winter, I don't care.