1 Gradually introduce aerobic exercise into your lifestyle. 2  Begin with just five minutes of activity and then slowly build up the length of your workout until you can work out for 30 minutes, 2 to 3 times a week. 3  Always begin any type of exercise with a warm up.
There are many methods for determining hydration status, including monitoring body mass changes, measuring various blood markers, and analysis of urine (urinalysis). An effective and simple way to determine the level of dehydration is to monitor body weight changes.
VSG on 09/24/08. I've had both but there was a long gap and my body fat definitely changed in between so it's hard to compare them. The most accurate body fat measurement method is a DEXA scan. Then the hydrostatic (dunk tank) and body pod (air displacement) methods have a similar accuracy. Calipers and bio-impedance are all over the place.