What innovative approaches are out there for staying hydrated during long gravel bike rides, particularly when access to water sources and support vehicles may be limited, and how can we effectively integrate these methods into our existing bike setup and riding style without adding unnecessary weight or complicating the overall design? Are there any novel, off-the-beaten-path solutions that riders have discovered, or alternative materials and technologies being explored that could potentially revolutionize hydration systems for gravel biking, and if so, how might these impact our ability to ride longer and more efficiently in remote areas? How do these methods account for varying temperatures, terrain, and individual hydration needs, and what role might data-driven approaches and wearable technology play in optimizing our hydration strategies?