Burn the Fat, Feed the Muscle is all about fat reduction not weight reduction, but nevertheless you do need to weigh yourself in order to do the fat reduction calculations.

The important thing is to always weigh yourself under the same conditions, using the same scale in the same place at the same time of day. First thing in the morning is normally a good choice.

Ideally you would only need to weigh yourself once a week in order to record progress, but there is a problem with that. Your body stores energy in your muscles in the form of glycogen. Every gram of gycogen that is stored also packs away about three grams of water. The effect of this is that depending on how full or empty your glycogen stores are, your weight can vary from one day to the next by as much as two pounds.

So if for one weekly weigh-in you get an 'empty' measurement and the next week you get a 'full' measurement then that could easily make you think that you've gone backwards over the course of the week whereas in fact you have been making progress. Other factors can also have an effect, such as the amount of food and drink that is currently being processed through your system.

So it's probably best to weigh yourself daily. That way you will get a sense about the range of weights that you are operating within and you will know whether that weekly measurement is a high or a low figure. Alternatively you could record your weight daily then once a week calculate your average weight over the last seven days. That then becomes your measure of progress.