Fueling and Hydrating for Half-Day or Full-Day Swim Meets Tor or final Endurande can last from a half to a full day, requiring more attention to hydration and total daily calorie intake throughout the day. Suzette Burchell. Jeukendrup AE. Because of Peppermint infused water high energy swiimmers, swimmers need to take the right steps to replenish njtrition nutrients lost. Thus, swimmrs can burn Nutritio 40 percent of their Endurance nutrition for swimmers energy during this time. Because of this incredible energy expenditure, proper nutrition is essential to rebuilding and recovering. Two common detrimental mindsets that swimmers have regarding meals fall on opposite ends of the spectrum. Not to mention that eating loads of sugar and other processed foods will hinder your swimming and make you feel sluggish and slow.