Answer:
when you drink water (or any liquid).
Healthy people drink a lot of water, as well they should. But consider when you’re drinking that water: If you’re drinking it with your meal, you could be impairing your digestion.
Not only does water dilute the gastric juices required to digest food, it also exits the stomach after just a few minutes, taking those juices with it and making digestion difficult. And since digestion accounts for 5 to 15 percent of your energy expenditure, that’s something you should care about.
A half hour fluid-free buffer on either side of your meals is a good place to start. It’s strange at first, but you get used to it.
