Not eating for 12-16 hours can help people quickly reset their sleep-wake cycle, according to a study from the Harvard Medical School. This discovery can drastically improve a person’s ability to cope with jet lag or adjust to working late shifts.
Scientists have long known that our circadian rhythm is regulated by our exposure to light. Now they have found a second “food clock” that takes over when we are hungry. This mechanism probably evolved to make sure starving mammals don’t go to sleep when they should be foraging for food.
Simply stop eating during the 12-16 hour period before you want to be awake. Once you start eating again, your internal clock will be reset as though it is the start of a new day. Your body will consider the time you break your fast as your new “morning.”
For example, if you want to start waking up at 2:00 am, you should start fasting between 10:00 am or 2:00 pm the previous day, and don’t break your fast until you wake up at 2:00 am. Make sure you eat a nice healthy meal to jumpstart your system.