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.
The Winkler Method is a technique used to measure dissolved oxygen in freshwater systems. Dissolved oxygen is used as an indicator of the health of a water body, where higher dissolved oxygen concentrations are correlated with high productivity and little pollution. This test is performed on-site, as delays between sample collection and testing may result in an alteration in oxygen content.