We eat much more than usual if eat in front of a TV or more generally put a distraction. It’s true that eating while watching is much more fun but it’s not good for health. In the book “59 Seconds” the author also suggested eating slowly.
The communication between the brain and stomach is little slower than the other organs. The brain doesn’t immediately register that the stomach is full, it surprisingly takes whopping 20 minutes for the brain to fully comprehend that it is full. It gets worse if we eat with a distraction meaning a movie.