Spring is warm with flowers blooming, and exercise is just the right time. Scientific exercise is particularly important for preventing injuries and diseases. Exercise should be gradual, allowing muscles, joints, and other parts of the body to gradually adapt to the intensity of the exercise. If acute lumbar sprain occurs during training, it is not recommended for mild cases to undergo massage or reduction correction. Waist protectors can be worn, and symptoms can be relieved in about a week. If the symptoms do not improve or if there are repeated sprains, it is recommended to go to the hospital for a systematic examination. Shoulder problems should be diagnosed at a specialized hospital. If it is determined that the rotator cuff injury is caused by tendon strain or tear rather than shoulder periarthritis, attention should be paid to maintenance, and efforts should be made to minimize actions such as hanging clothes, nailing nails, and lifting hands beyond the head. Take protective measures during exercise by sticking a cloth around the shoulder joint. Single and parallel bars and other sports are not suitable for most middle-aged and elderly people. If discomfort is found in the knee joint, adjust the exercise plan and reduce the frequency of vigorous exercise. Try to avoid choosing sports such as badminton, running, and hiking that can cause significant damage to the knee joint. Middle aged and elderly friends should pay attention to reducing the amount of exercise such as Tai Chi that requires long periods of squatting posture. Walking is a great way to exercise, but it takes about an hour each time to achieve good fitness results. For patients with bone spurs in the feet, it is necessary to control the amount and divide each walk into several segments, taking 10-15 minutes of rest in between each segment to allow the feet to fully rest. (New Society)