Best and Worst Foods for Sleep DARK CHOCOLATE Worst: Chocolate contains not only calories, but caffeine, especially dark chocolate. A 1.55-ounce Hershey’s milk chocolate bar, for instance, contains about 12 milligrams of caffeine, or the same amount as three cups of decaffeinated coffee. Previous Next 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2017-09-22 admin Share ! tweet