5 Items Every Swimmer Needs, According to Water Polo Star Ashleigh Johnson

Johnson always has a water bottle on her. "I keep one in my car, one in my house, I'll take one to practice," she says. "But I always have one with me, because hydration is key. I can feel it in my body when I'm dehydrated and I know I'm not training at the level that I need to be and I'm definitely not recovering at the level I want to be."

Johnson particularly loves a Hydro Flask stainless-steel water bottle ($36), because it "keeps the water cold and is easy to carry around."