Once upon a time, I joined Weight Watchers.
I did the points program and if I recall correctly, I think I could eat 21 points per day.
According to my calculations, that meant I could eat 21 of the 1 point Weight Watchers frozen chocolate bars and as much sauerkraut as I wanted. (Sauerkraut being 0 points)
Not sure how I did it, but I did lose enough weight to meet my goal and get a free keychain.
Then I promptly quit.
Then I promptly gained back all of the weight I lost plus more.
Why am I telling you this?
No reason, just had a hankering for sauerkraut and it made me think of WW.