The combination is hard to beat: warm sand, ample sunshine, brisk salt air and the hypnotic ebb and flow of ocean waves. There’s just something about the beach that allows our cares to drip away, leaving us refreshed and reinvigorated in the process. No wonder Americans make more than 409 million visits to the beach each year, according to pre-pandemic figures tabulated by the U.S. Lifesaving Association, which trains and sanctions lifeguards.