1, lasting more than 20 minutes.
2. The heart rate is above 120 beats/min (young people).
3. The frequency is more than 3 times a week.
In other words, it is enough to run 3-4 times a week, and there is no need to run every day. If running is for fitness, it is necessary to cooperate with rest, otherwise fatigue will lead to physical problems. So take a day off after running for two days, or take a day off after running for three days. Run for half an hour to an hour at a time, and the exercise effect is appropriate.
Running is defined as land animals moving with their feet. It is defined as a step in sports, and both feet will not land at the same time. It can also be aerobic exercise or anaerobic exercise.