A little strange...Who knows?
http://goo.gl/h5c13
For wakeups between 2-4 am, accompanied by a feeling of excess adrenaline circulating through your system (adrenaline peaks at this time), salt and sugar under the tongue is the only way to go. You don’t want to be chewing anything, wandering around the house looking for food, opening the fridge and looking at bright lights when hoping to fall back asleep, and so forth. You want to remain as unstimulated as possible. Keep the sugar/salt mixture by the bedside for easy and thoughtless access until you stop having middle-of-the-night wakeups.”