What I am talking about is all the overtraining I did in times gone by with limited programs. Twenty rep squats and deadlifts, the heavy lifting on basic lifts, 100's of push-ups daily, 300 or more Hindu Squats daily, pull-ups daily, GUTS etc. They all worked up to a point, but there is a point of diminishing returns that proves detrimental to your joints, your overall athletic ability and the general shape of your body.
I'm an old guy now and the prospect of being able to say you lifted such and such a weight or I did X number of repetitions in this or that exercise or that your arm is a certain circumference, is nowhere as important as your health, your mobility, your balance, your stamina and the strength to move your body.
Balance your exercises to cover all the muscles and areas of your body. For example, the muscles that make up the rotator cuff are just as important as your pushing muscles, but no one thinks of that until they start to have problems. Balance the types of exercises you do so you are hitting all aspects of fitness. If you are strong, but have no endurance, flexibility, or mobility, how fit are you really? Be mindful of how certain exercises build your body. Overdoing the push-ups can throw your proportions off just as much as overdoing the Hindu Squats can. Keep balance and moderation in your training. You may not seem to train as hard, but you'll look better, be more fit, and be more athletic to boot.
Great thread Greg,you mentioning the 20 reps squats and deadlifts, made me think about heading to the hot tub. I got pretty strong at that time doing those kind of workouts, but for a couple of days I was paying the price, now it's all about staying healthy, injury free,mobile and not waking up hurting the next morning.