The measuring tools to determine body composition can be very confusing. Any fitness hobbyist should learn how to correctly use skin calibers to determine the skin fold and plug it into a formula. Skinfold measurements also have a large degree of variation and should only serve as a guide, relative to bodyweight, about overall leanness. Measurements get more and more inaccurate as one gets leaner. The overall theme should be in a reduction of fat mass with an increase in strength and lean mass. This can be a great strategy against aging and lack of mobility as well. Lack of mobility as well as loss of lean body mass is associated with aging. Simple measurements with appropriate nutrition and senseable exercise are effective tricks of the trade.
Body Mass Measurements