Question: how much water should a person drink while working to avoid dehydration?
Answer: How to avoid dehydration. According to the American College of Sports Medicine, to avoid dehydration, active people should drink at least 16- 20 ounces of fluid one to two hours before an outdoor activity. After that, you should consume 6 to 12 ounces of fluid every 10 to 15 minutes that you are outside.