This is a great place to start. When using ground beef to make hamburger patties, be sure to select the right meat. Lean ground beef like ground sirloin or the 7% fat meat will tend to make dry burgers.
Changes in lifestyles, nutrition, and ethnic composition of populations lead to changes in the distribution of body dimensions (e.g. the obesity epidemic), and require regular updating of anthropometric data collections.
BMI is currently the best available anthropometric estimate of fatness for public health purposes. The validity of anthropometric data as a proxy for body fat is assessed by direct measurement. There are two main approaches: physicochemical methods and imaging.