From the military stand point and in accordance with AR 600-9, The Army Weight Control Program, the waist is measured at the belly bottom forming a parallel line. Please refer to the before mentioned full regulation; it explains how the US Army determines body fat and provides all the forms and formulas. For an easy to fill form I recomend a small application from 550 cord do a google search, it can be use for male and female and does the calculations for you. I do the measurements in the morning and also before going to bed to comparte and see how my diet affects my measurements. I am not concern with weight, rather use body fat as a measurement of progress. I am at a point where I am replacing fat with muscle so my weight has actually increased while my measurements and body fat are getting better. This mornis I was at 21.05% and I am 41 yrs old, and somewhat active. I hope this information will help you.Thanks for this! I'm going to buy some measuring tape this weekend and I wanna track solely by measuring and the mirror.
The only scale I want to use is when I visit my doctor. My weight is going to jump up when I go in 2 weeks because I know my home scale is low, but I won't worry too much (since I knew this from the start.) I'm going to base my pounds loss off that weight and so I will only update my actual poundage every 2-3 months. If I'm taking inches off I won't worry so much about no lbs lost this week or last week or whatever.