Timing your food consumption with intermittent fasting is all about tuning into how you body reacts to food (hormone shifts, immune changes, etc.) and how food affects your body through its 24-hour cycle of being awake and asleep. You don't process nutrients the same way at 11 a.m. as you do at 11 p.m. During the day your body is in a fat-burning mode, but in the evening it's designed to be fat-storing. But beyond this, do you really know what intermittent fasting is all about? Take the quiz to find out!