When it comes to measuring your body fat percentages, there are many ways suggested to go about this; however, not all of them are reliable in that they take all of the different compositional elements into account.
For example, the oldest way of measuring body fat percentage is known as the BMI, or the Body Mass Index. This is based on the individual’s height and an average weight for the same but that is not a reliable way of measuring the initial or the changing composition of an individual’s body.
There are two components to body mass in general; fat mass and lean body mass. However, to consider this issue, the lean body mass can also be further divided into three other categories; bone, muscle, and what is commonly known as ‘everything else.’
Considering that all of these different components contribute to the overall body mass, the BMI does not consider how the mass is broken up. Thus bone is equal to muscle, which is equal to everything else; and this does not portray an accurate picture on how much mass is actually body fat.
Another problem with the BMI is that because it does not break the body mass down into the independent categories when one is participating in physical training, the decline in body fat can often be replaced by an increase in muscle mass yet there is no distinction between the two using the BMI.