Sleep is a HUGE when it comes to keeping blood glucose low.
If you are sleep deprived (some researchers would say that if you routinely get fewer than 8 hours of sleep, than you are sleep deprived) the beta cells in your pancreas are less sensitive to glucose spikes. If the beta cells don't realize that there's an influx of glucose, they won't make the necessary insulin that would clear the glucose from your bloodstream, so your blood glucose will be high.
Sleep deprivation also affects the satiety and hunger hormones, the amount of food that you eat, how much weight you gain, your risk for diabetes complications, your risk for cancer -- and the list goes on.
Some studies suggest that periodic, short-term fasting can improve sleep. One study found fasting periodically reduced awakenings during the night and decreased leg movements (which can interrupt sound sleep).
To make intermittent fasting easier for you, I've put the facts and tips into a one-page guide so you can narrow your eating time and improve sleep.