The number of runs is relatively small. I think it is at least three times a week, and each time the distance is 10 km, but 5 km is not small, so it is qualified. In fact, simply running to lose weight will have a quick initial effect, but there will be a platform period. I have been running for two years, and I have participated in half a horse and all horses in my spare time. Of course, half horses with a daily weight of 15K are also common. Lazy cancer broke out this year, and I seldom ran more than 10K, so I still have a small stomach. This amount, not to mention 5K, even if it is 10K twice a week, it can't effectively lose weight. As for speed, the sooner the better, as long as it suits you. Do more anaerobic exercise every day to strengthen the exercise of core muscles. For running, it is recommended to increase the mileage three or four times a week, and then it is recommended that every time in the middle of the week 10k and rest days 15K or more. Of course, please take your time now, starting from 5K, and increase the mileage once a week (500m or 1K per week to protect your health.