Exercising in hot weather requires careful planning and precautions to avoid heat-related illnesses. Staying hydrated is crucial; drink plenty of water and consider electrolyte-rich sports drinks to replace fluids lost through sweat. Wear lightweight, light-colored, and loose-fitting clothing to reflect sunlight and allow your body to cool efficiently. Schedule workouts for cooler times of the day, such as early morning or late evening, to avoid peak heat.