Did you know that Indian curry and other heavy spices can keep you awake at night? In a study conducted in Australia, young men who poured Tabasco sauce and mustard on their dinner had more trouble falling asleep and experienced less deep sleep than men who ate blander dinners. Spices can also cause heartburn so avoid them in late-day meals. Blander definitely appears to be better in the hours before you intend to fall asleep. Relegate heavy spices to earlier in the day. Avoid combining spicy and high-fat foods in a late-day meal, too. Together, they can give you twice the potential for sleep-wrecking.