> For the vast majority of people, if you feel OK, you are OK. I think you might be missing the point entirely here. You can "feel OK" when a whole lot is NOT

> For the vast majority of people, if you feel OK, you are OK. I think you might be missing the point entirely here. You can "feel OK" when a whole lot is NOT OK if your daily existence is extremely sedentary and you never even move your joints through their full range of motion, let alone elevate your heart rate and break a proper sweat. Exercise is literally about exercising your capabilities. If you don't exercise them, you don't discover they've gone missing until it's too late.