Changes

This is the cheapest way of getting a viable estimate of your own body fat. The calipers are extremely cheap ($5 from [http://go.fellrnr.com?id=35454X937677&xs=1&url=http%3A%2F%2Fwww.amazon.com%2FAccu-Measure-Fitness-3000-Personal-Tester%2Fdp%2FB000G7YW74 Amazon.com]) and directly measure your body fat. They do require some practice to get repeatable results, but the price, performance and convenience makes them an ideal starting point.