The best I ever felt and LOOKED recently was when uusing the very low impact Gazelle machine. My butt and thighs were tightening noticably and so were my upper arms but I bought mine second hand and it broke, now I know why they were selling it....Well now (2 months later)my butt and upper arms are flapping again. I need to get a new one but don't have the dinero so i'm waiting till Home Shopping channel has a special on the Tony Little Gazelle....this thing works and I want one NOW!!!! [Eek!]