The body can naturally fluctuate by several pounds from day to day, due mainly to changes in your hydration levels. This means you should never attach too much significance to a single weigh-in, but rather look at the longer term trend.
For many people, one of the fringe benefits of eating healthier is a lower sodium (salt) intake. This means less retained water, and many people can see a drop of several pounds in the initial weeks as the body lets go of this water weight.
However, increased exercise can lead the muscles to retain water, and this can lead to little change (or even an increase) in the scale, even as you are burning fat.
What you are seeing is quite normal.
But many people find the inevitable increase that natural fluctuations imply to be very frustrating, and if you think you fall into this category, perhaps weighing in less frequenty (eg. fortnightly or even monthly) will help you see the longer term trend rather than the short term noise. I also agree with the suggestion of tracking inches - the tape is a far more reliable means of tracking your progress than the scale.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
| current weight: 178.0