Contrary to the commonly held belief that you should not eat before swimming,
“The old saying that you should wait at least 30 minutes after eating before you swim is based on an idea after a big meal; blood will be diverted away from your arms and legs, towards your stomach’s digestive tract. And if your limbs don’t get enough blood flow to function you’re at risk of drowning”
Eating the proper foods at the right time can actually benefit your workout not eating enough before a workout may lead to lethargy, fatique, weakness, nausea and dizziness. Ideally, meals should be eaten at regular intervals throughout the day. Eat snacks approximately forty-five minutes to one hour before your workout. However, how close you eat to a workout varies among individuals as some people may be able to eat a small snack, such as a piece of fruit, 10 minutes before a workout with no ill effects. Experiment with what works for you but, to reduce the chances of stomach upset avoid eating foods that are too heavy or are unfamiliar to you before you swim.