How can being too full give you nightmares?

Question

I heard that you shouldn't have a big meal before you go to bed because it can give you nightmares. Why?

Answer 1

Just a theory now but people tend to have more vivid dreams when their body temperature is high ie when they have a fever, during pregnancy, or on especially hot nights. If your stomach is full a lot of your blood is busy digesting the food which can cause alterations to body temperature. Maybe that's what happens

Answer 2

You eat real late at night and you are full that you can't relax because it is like your stomach have gas in it because you didn't give it time for you food to diegust in your system.