Hydration needs change with different types of exercise based on intensity, duration, and environmental factors. During high-intensity workouts, the body produces more sweat, leading to greater fluid loss, necessitating increased water or electrolyte intake. Conversely, lower-intensity activities may require less hydration. Additionally, factors such as temperature and humidity influence fluid requirements; hotter and more humid conditions increase the need for hydration. It's crucial to drink water or sports beverages before, during, and after exercise to maintain optimal hydration levels and prevent performance decline or health issues.