Running before meals is the best, and of course it can replenish water.
If the time is not good, it is ok to run for about an hour after dinner.
Running belongs to
aerobic exercise
What aerobic exercise wants to achieve
Reduce fat
The shortest time is 20 minutes, and the average person chooses 40-60 minutes. If you run, the speed is 8- 10km/ hour and the distance is 6km- 10km.
If you insist all the time, the strength is enough. Stick to it for three months, and you will have obvious results.
I hope my answer is helpful to you ~ ~ Please adopt it in time ~ ~ Ask me if you don't understand ~ ~ Hehe.