Is it true you must wait two hours after eating before swimming? Discover the science behind this common belief and whether it’s really necessary.   It’s one of the most common pieces of advice parents give their kids at the pool: “Don’t swim right after eating—you’ll get cramps!” But is there any truth to this? Do we really need to wait two hours after a meal before diving in? Let’s take a closer look.   Where Did This Rule Come From?   The idea dates back generations. The belief was that after eating, blood flows to the stomach to help…