Why I stay away from restaurants

I had what should have been a fairly innocuous meal yesterday at a Mexican restaurant -- refried beans and grilled chicken with mole sauce. Wrong. I have got to remember that most restaurants use MSG liberally, and sauce = extra MSG. I should have just gone home to eat, we had food. I was just tired. But now, I am beyond tired because I woke up about 4 am and just could not get back to sleep, and I'm convinced it was the food. I am going to do what I can to purge it from my system -- lots of fruits and veggies to detox it, I think. Ugh.