What you eat has an effect on your sleep patterns, and you probably already know that. Who hasn't had a crazy dream after eating something unusual? Maybe certain foods give you heartburn and you can't stay asleep because of the discomfort.
Other things you eat may help you fall asleep. Heavy meals can make you feel drowsy, but you don't want to be overeating as a sleep strategy. Sometimes a warm glass of milk at bedtime (or hot herbal tea) can soothe you to sleep. Thanksgiving is famous for making people drowsy. Some claim it's the tryptophan in the turkey, others blame the high sugar and starch content of the rest of the meal.