During endurance events, hydration practices shift significantly to ensure optimal performance. Athletes often transition from pre-event hydration to regular fluid intake during the activity, focusing on electrolyte balance. It's crucial to consume water or sports drinks at specific intervals to prevent dehydration, which can impair performance and increase the risk of heat-related illnesses. Post-event, rehydration is equally important to restore lost fluids and electrolytes. Understanding individual sweat rates and environmental factors helps athletes tailor their hydration strategies effectively throughout the event.