From the stuff we drink and swim in, to the steam that eases congestion and the ice that reduces swelling, water is all around us (and even in us). Heck, it kind of is us. “Water makes up about two thirds of who we are, and influences 100 percent of the processes in our body,” says CamelBak hydration expert Doug Casa, PhD. That probably explains why we feel better when we’re drinking enough of it. To learn exactly how water is helping us, as well as some creative ways to use it, check out these 34 reasons why you should go hydrate right now.