5
varies throughout the day and affects your impedance measurement. If you are dehydrated,
there is a greater chance for fluctuation in the body fat percentage displayed by this scale than
when you are fully hydrated.
For best results, choose a consistent time to use this analyzer, such as in the morning. By
establishing the pattern of your body’s fluctuation over a period of one month, you can
determine your average level of body fat. Women will have more fluctuation in water content
than men and need to monitor their reading over a longer period to establish a personal
average. You must determine this as a reference point before measuring progress in a health
program.
You must wait several hours before taking a body fat reading when:
Drinking coffee or alcohol,
taking diuretic medications, or exercising. These all affect your level of hydration and the
accuracy of this scale.
A guide to normal healthy range of total body water (TBW) percentage for MEN:
BF
%
Range
Optimal
TBW
%
Range
4 to 14%
70 to 63%
15 to 21%
63 to 57%
22 to 24%
57 to 55%
25 and over
55 to 37%
A guide to normal healthy range of total body water (TBW) percentage for WOMEN:
4 to 20%
70 to 58%
21 to 29%
58 to 52%
30 to 32%
52 to 49%
33 and over 49 to 37%
Body water measurement results are influenced by the proportion of body fat and muscle. If
the proportion of body fat is high, or the proportion of muscle is low, then the body water
results will tend to be low.
It is important to remember that measurements such as body weight, body fat and body water
are tools for you to use as part of your healthy lifestyle. Since short term fluctuations can be
normal, we suggest that you chart your progress over time, rather than focus on a single day’s
reading.
Consult your physician to determine what is most ideal for you.
MUSCLE MASS – WHY SHOULD I KNOW IT?
According to the American College of Sports Medicine (ASCM), lean muscle mass may decrease
by almost 50 percent between the ages of 20‐90. An inactive/sedentary lifestyle can cause loss
of lean body mass while body fat increases. It’s also important to know your muscle mass
