why shoud you not lie down and eat or talk while eating?
Answers
food has to go to stomach, our mouth is placed above the stomach so that u drop something in mouth it can go straight into stomach without any problems. But when you liedown your mouth and stomach will be almost adjacent to one another, food can travel like sides it can only travel from top to bottom due to gravity. So you have to force it go to stomach, which you can't do. That's a problem with liedown eating.
you can talk while eating but that adds more air to your food, thus making you swallow air , technically air has to go to lungs through nose, food has to to go stomach through mouth, but because of your too much talking and swallowing air stomach gets air which Its not prepared what to do. So you will feel like full, or something stopping you from eating. Or will get burps afterwards, which makes you feel hungry again.
because we won't concentrate on one particular action of eating.... human mind can focus on one activity at a time. secondly, incidences can happen where choking of food can occurs and it might be fatal...
hope this helps!!