I did WW a couple of years ago. I only had 15 pounds to loose and was way under 150 pounds. I joined as support for a friend who was considerably overweight and I can tell you from experience that I had problems from the word go with balancing points with activity. They only allowed me something like 10 points per day and I wasn't only hungry when I cycled or did any other exercise but I was also bottoming out my blood sugar. They advised me to eat cheese sticks. I did, it didn't help. I finally went off the program per my doctors instructions and just started eating a healthy low fat diet. The problem was that the carbohydrates were so restricted that with exercise I was just bottoming out. I don't know if there is a solution. My friend balanced out the same problem by sucking on tootsie roll pops which are only 1 point apiece, but she too had to quit when her activity level over rode her points and she began having the same problems.