I suddenly weigh 170 today coming from 172. Something does not seem right to me, but all my scales agree. This may mean either I am actually underestimating the calories burned, or I am overestimating the calories consumed. For a couple days I did not document the homemade burritos that I ate which I should of estimated anyways. However, two days should not make that much of a difference. As far as underestimating calories, this would really surprise me. However, most of the time my weight has been stable, I had not adopted the new techniques I am using now to access calories burned. I will have to look into this.