When going out to play ball games in summer, you need to pay attention to the following: Firstly, replenish your energy before exercising as it consumes a lot of physical strength. You can appropriately supplement nutrition according to the situation before the activity. Secondly, avoid exposure to the sun. Choose a suitable place to play and don't play under direct sunlight or you might get dizzy. Thirdly, replenish water in time but avoid excessive drinking. Before playing, replenish some water in advance but not too much or you might not be able to run freely. Fourthly, stretch before and after the exercise. Before exercising, it can enhance blood circulation, improve body flexibility, prevent muscle soreness and stretch the muscles and tendons, and reduce the probability of injury. After exercising, it can prevent lactic acid accumulation, improve stiff shoulders and necks, and maintain your figure. Fifthly, don't cool down too quickly after the exercise as your body will feel very hot. Sixthly, replenish electrolytes in time. When sweating profusely during playing, replenish water and some functional beverages to prevent shock. Seventhly, don't drink too much water in one go. When playing basketball, drink water several times and not too much each time. You can prepare some light salt water to replenish the consumed electrolytes in time. Eighthly, don't overdo the exercise. Especially in summer, pay attention to the amount of exercise.