What happens? You continue to step on the scale every day watching the number go down, then maybe up and then back down Personal Trainer Scottsdale, and you get frustrated with yourself and begin to doubt that you can ever achieve that 20-pound goal. This brings me to the first reason the scale is your enemy. Your weight is going to bounce all around, especially in the beginning of any new program and diet. So many things go into what the scale will read from day to day, what you ate, how much water your drinking, did you just workout, did you miss a workout, the point is that number can be incredible skewed from day to day and it will rarely tell you the whole story.