My friend and I started SB together in January of this year. She is at goal now, down 55 lbs and never did an ounce of exercise. She detests exercise...lol I'm sure it depends on the person, your body type, etc....but I know it's doable...cause she's done a fantastic job. Now she really wishes she would have exercised though, because she's a little flabby in some areas after losing that weight. So now she's talking about doing some weight lifting to tone up a bit