As someone who’s spent a lot of time around baseball players, I can share that hydration is absolutely critical for athletes in this sport. Baseball, especially at a competitive level, demands not just skill but also tremendous physical endurance. Players sweat extensively under the sun or stadium lights, often losing a lot of fluids and electrolytes which need immediate replacement. This explains why your boyfriend might need so much water—it’s about keeping his energy up and preventing dehydration during those long games or rigorous army-style training sessions. I’ve also noticed that athletes sometimes carry large, heavy water bottles or multiple containers, such as ones labeled "ALPINE SPRING WATER" or similar branded water, to ensure they have enough fluids on hand. It can get heavy, which might be why you’re questioning the weight in his trunk. Regarding what you found in his trunk, it’s common for players to keep emergency supplies like water, rehydration salts, or even cooling towels there due to the unpredictable nature of games and practice. Sometimes, what seems excessive is actually carefully planned for those "desperate times" when quick recovery matters the most. Finally, baseball players, especially those also involved in physically demanding activities like army training, face unique challenges in balancing hydration, nutrition, and physical readiness. Observing their routines reveals the discipline and care invested in maintaining peak performance. So while the amount of water and the weight may seem puzzling at first, it all ties back to the vital need to stay hydrated and ready for action.