Correct me if I am wrong, but the tightness and soreness is due to the increase of Lactic Acid buildup in the muscles. I tend to feel this only in the legs (thighs), and upper chest/shoulder areas. I never feel it in my back or arms.
Would I be correct in saying that I don't feel it there, because I am just not pushing hard enough, or using enough weight, etc.
Any thoughts ?
