Running is a fitness exercise, but running is generally suitable for young people or exercisers with good physical fitness, at least 3 times a week, at least 30 minutes each time, and the heart rate when running is at least 100 times/minute. Running fitness should pay attention to the following issues: 1, to maintain the correct amount of exercise, not the more the better, to take a step-by-step approach to gradually increase the amount of exercise, can not be rushed. 2, to maintain the correct running posture, head held high, arms swing naturally, to maintain an even breath, generally inhale through the nose, exhale through the mouth, and running, do not fast and slow, do not turn sharply, which is harmful to the joints. 3, when running, you need to be careful to keep the heart rate at least 100 times/minute, but running is a fitness exercise. 3, running should pay attention to with a reasonable diet, maintain enough energy, such as moderate amount of fish, chicken, etc., try not to eat too greasy, protein and carbohydrate food should also eat more, every day to ensure that you eat 2-3 fruits.