Before the competition, make sure you eat an easily digestible, carbohydrate-rich diet and avoid fatty and high-fiber foods! The last main meal takes place about 3 hours before the start. With high temperatures in the swimming pool and increased sweat loss that you can’t feel in the water, it is particularly important that you are sufficiently hydrated and take in enough electrolytes in addition to fluids. Targeted performance optimizers can also have a positive effect on performance and regeneration.