What are the most effective methods for maintaining hydration throughout a race, and do the traditional methods of relying on sports drinks and electrolyte-rich beverages still hold up against the newer approaches of using hydration packs and real-time sweat monitoring systems? Some argue that the one-size-fits-all approach of sports drinks can lead to overhydration and decreased performance, while others claim that the added convenience of hydration packs outweighs the potential risks of overhydration. How do the risks of dehydration versus overhydration impact a riders performance, and what strategies can be employed to ensure optimal hydration levels throughout a race? Do the benefits of real-time sweat monitoring systems justify the added cost and complexity, or are they simply a gimmick with little practical application? What role do individual factors such as sweat rate, climate, and course profile play in determining the most effective hydration strategy, and how can riders tailor their approach to suit their unique needs?