turkey's a great food, but it has tons of tryptophan. and after eating it, cottage cheese, some of these really have high tryptophan. >> umas, hast interesting. >> absolutely. halibut. >> fish? >> yeah. a lot of magnesium. they can calm your muscles down, make you tired. these are healthy food that you want to take in moderation. >> if you go to the fancy diet books you'll find a million explanations, but the bottom line is a good nutritionist will always tell you a lot of different colors on your plate. fruit and vegetables and a lot of fiber and a lot of fruit and vegetables. >> is there really any junk food that's not so bad for you that you can have? how can you cheat? >> if celery -- it's not a junk food. >> no. that's not a junk food. >> a chocolate cupcake. >> i'm talking doritos, buddy. >> salsa and schipotle. >> and i love pico de gallo.