Measuring Body Fat Is Important for Determining Fitness. Weight alone is not a clear indicator of good health because it does not distinguish between pounds that come from body fat and those that come from lean body mass or muscle.
"Body composition assessment is a physical test that measures the proportion of the various components of a person's body. The human body is comprised of water, protein, fat, and minerals, but for most purposes, it is the level of fat compared to lean mass that is of interest. In general, most body composition analysis tests measure the ratio of fat to lean tissue. Body fat, or adipose tissue,
has chemical and physical properties that allow for a number of analytical methods, each with its own advantages and limitations."
information from chacha .com
Yes, because the information in that book can either effect you positively or negatively
A.) juice is the correct answer to your question
to increase the years of healthy life for each American i think pretty sure
