 an overactive stress or emergency or fear nervous system so by saying grace before you have your meals or being grateful before you have your meals or while you're eating your meals you'll activate your rest and digest nervous system this is why we say grace before we eat one of the worst things you could do is eat when you're under stress or eat when you're watching the news and speaking of the news don't watch the news that's a surefire way to activate the fear nervous system do you ever hear anything good on the news