Myth: You Should Wait an Hour After Eating Before Swimming

Many people are warned to wait 30 minutes to an hour after eating before swimming to avoid cramps. This myth suggests that blood will be diverted from the muscles to the stomach to aid in digestion, making swimming unsafe right after eating.

There is no scientific evidence to support the claim that you should wait after eating to swim. While it's true that digestion requires some blood flow, the body is capable of directing blood to both the digestive system and muscles at the same time. Swimming right after eating does not pose a significant risk of cramps or other issues. Cramps are more likely caused by dehydration, muscle fatigue, or overexertion, rather than the timing of meals. In fact, many swimmers can engage in light swimming immediately after eating without issues. The reason for waiting after eating is largely rooted in tradition and caution. It’s advisable to avoid heavy meals right before swimming, but there’s no need for an hour-long delay unless the meal was particularly large or heavy.