Eating Before Swimming Causes Cramps and Drowning — Exaggerated Myth

Many people are told to wait 30 minutes after eating before swimming to avoid cramps and drowning. There is no strong scientific evidence supporting this rule.
While digestion does redirect some blood flow, it is not enough to significantly impair muscle function or cause dangerous cramps in most cases.
At most, intense swimming immediately after a heavy meal may cause mild discomfort—not a life-threatening situation.