Everyone knows you’re supposed to tilt your glass when you pour a beer so there’s not too much foam at the top but being TOO careful about it can actually make you more bloated.
Having no foam in your glass means you can drink it right away but it also means your beer still has all of the carbon dioxide in it. When those bubbles pop the gas expands which can either happen in your glass or in your stomach.
In other words, you’ll feel a lot less bloated if you let some of the bubbles pop BEFORE you drink it! This is really helpful if your having food with your drink so you won’t get full as fast. So find that happy medium with about two inches of foam!