This one can store several peoples stats and remembers your information from one measurement to the other. It uses a body fat measurement method called bioelectrical impedance analysis (BIA).
The Wikipedia entry for BIA is as follows:
Bioelectrical impedance analysis (BIA) is a commonly used method for estimating body composition...BIA actually determines the electrical impedance, or opposition to the flow of an electric current through body tissues which can then be used to calculate an estimate of total body water (TBW). TBW can be used to estimate fat-free body mass and, by difference with body weight, body fat. (To read the full article click here.)
It is known that this is not the most accurate method to measure body fat (read an article here) but for me it is easy and was relatively in expensive. The important thing to keep in mind when using this method is that you need to be consistent. Since the amount of water in your body can change throughout a day you have to take the measurement at the same time everyday. I measure in the morning first thing after waking up. This works great for me because I have been inactive all night and have not had anything new to drink so my body is in it's least hydrated state. I find that this gives me a pretty stable reading.
I know that the body fat % given may or may not be accurate but what I am really looking for is the change from start to finish. I want to see the body fat % drop over an extended period of time, even though it will fluctuate from day to day. This helps me know that I am actually burning fat and not just shedding water weight and lean body mass. The body fat analyzer is grteat a tool that I use to help me get where I want to be. It is simply another way to tell how I am doing and as I like to say, "if you can't measure it you can't change it."
TODAY'S STATS
Calories:
Weight: 255 lbs
Mood: Doing OK
Total Weight Lost: 10 lbs since 1/1/09
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