Dehydration slows your metabolism and encourages water retention, while drinking sufficient water regularly allows your body to release excess water, according to Lauren R. Shaw, author of the book “Done With Dieting.” Conversely, if you don’t drink enough water, you can become dehydrated at the same time as your body is retaining water in an attempt to keep electrolytes and other important nutrients adequately dissolved and dangerous toxins from becoming overly concentrated and causing damage. Shaw recommends drinking as much as a gallon of water per day for optimal rehydration or at least half your body weight in ounces to replace the minimal amount lost during the day.
For more information
Roizman,, Tracey. “Does Drinking Water Keep You From Retaining Water?” Healthy Eating | SF Gate, http://healthyeating.sfgate.com/drinking-water-keep-retaining-water-3093.html. 27 December 2018.