Unit 80:Don't eat after dark-within reason第80单元：天黑之后勿做不必要的进食Eating before dark gets your digestive system working on your meal before you go to bed,which helps you use up more calories.在天黑之前进食.可使你的消化系统在你就寝前继续运作，这样一来，有助于消耗更多的卡路里。This tip also makes it easy to avoid midnight snacks.这个秘诀也可以让自己很容易免吃宵夜。Of course,if the January sun sets at 4:30 where you live and you work until 5:00,you'll have to make some adjustments.当然，如果你住的地方，在一月份时太阳是在四点半下山，而你五点才下班，你就必须做些调整了。