First of all, massages are dehydrating. Kneading and working muscle gets fluid pumping out of the soft tissue and into your circulatory system, where it heads toward your kidneys. That’s why many people have to pee right after a massage. You need to replenish all that lost water – by drinking more.
Then there’s the issue of metabolic waste, which is produced every day by your muscles. When your muscles are tight or you’ve got a major knot, it constricts circulation in those areas, decreasing the body’s ability to flush out this waste Tight muscles are probably what prompted you to make a massage appointment in the first place! Massage helps to relax tension in your muscles, improving circulation around the muscles and allowing metabolic waste to be dumped into your system. Drinking provides your kidneys with the water they need to effectively eliminate the newly liberated waste!