Re: the 5', 200+ pound woman -- it's probably impossible to tell what her muscle tone is because her excess body fat is covering it. I think that just carrying around that much extra weight is almost a constant anaerobic activity. Therefore, if she'd cut carbs and lose her excess body fat, she probably has some decent muscle tone underneath the fat. Is this woman trying to lose weight? Even though it's great (well, maybe amazing is a better word -- I'm not sure it's "great" for anyone to walk marathon distances), I cannot see how it's healthy for her to be carrying so much weight. Her knees and back for instance must be in agony. I am a very short chick, 5'2.5" and I can tell you that even being slightly overweight really strains my knees.