In order to walk into the ring / cage in the best possible condition, a fighter must be hydrated

Proper hydration is directly linked to optimal physical and mental performance. Dehydration can lead to a decrease in strength, power, endurance, and overall athletic performance. It impairs reaction time, coordination, and decision-making abilities, which are crucial in combat sports where split-second decisions can make a difference. 

 Combat sports often take place in intense and physically demanding environments. Athletes can generate a significant amount of heat during training and competitions, making them more susceptible to overheating. Adequate hydration helps maintain a stable body temperature by enabling efficient sweating and cooling mechanisms. 

 Combat sports like boxing, mixed martial arts (MMA), wrestling, and others require sustained effort over extended periods. Proper hydration ensures that the athlete's muscles are adequately fueled with water and nutrients, reducing the risk of premature fatigue and cramping.  Hydration effects your breathing efficiency and heart rate. 

 Dehydration can lead to increased muscle cramps, strains, and other injuries. When an athlete's muscles and joints are well-hydrated, they are more pliable and less prone to injuries during intense movements and physical contact. 

 Hydration is essential for brain function. Even mild dehydration can lead to cognitive decline, impaired focus, and reduced mental clarity. In combat sports, where strategic thinking and quick reactions are crucial, staying hydrated can make a significant difference in an athlete's performance. 

 Hydration is essential for the body's recovery processes after intense physical exertion and potential injuries. It aids in nutrient transport, waste removal, and tissue repair, which are vital for a combat athlete's quick recovery. 

 Combat sports have weight classes, and athletes often engage in weight cutting to fit into a specific category. Proper hydration plays a role in maintaining a healthy and sustainable weight-cutting process. Severe dehydration practices for quick weight loss can be dangerous and have a negative impact on an athlete's performance and health.