26. Exercise more
What happens when you spend some time at the gym? Sure, there are the sore muscles along with thoughts that you may very well be insane for putting your body through this, but most notably there is sweat involved. Any strenuous exercise will result in that familiar feeling of dampness on your skin. For those people who are holding onto too much water, this thin film of moisture outside of their body will be very welcome.
While exercises may only help water retention in the short-term, it is one of the most useful things you can do if too much water is your problem. Furthermore, when you exercise your body moves more water into your muscles which will help reduce the doughy-looking appearance which is all too familiar for those that cannot shed those extra liters.