In principle, you can't eat within one hour after fitness, and you can drink a small amount of water several times to supplement it.

Suggestion:

If the intensity of fitness is low, it will take about 30 -60 minutes for human blood circulation to return to normal, and it is more appropriate to eat after this time.

If the intensity of fitness is high, it will take about 1 hour-two hours for human blood circulation to return to normal.

It depends on your own situation.