The power nap was created so special operators could catch up on their sleep. It may decrease drowsiness, enhance memory, and make us feel in peak condition. The secret consists of elevating the feet over the heart or laying on the back. Jocko Willink, a former US Navy SEAL officer, has described his daily ritual of taking a brief sleep. The author of Discipline Equals Freedom Field Manual said he used it mostly when the time was of the essence.
Some scientific research suggests that sleeping with the legs slightly raised helps increase blood flow and circulation, promoting a comfortable night’s sleep. Sleep deprivation diminishes performance, mood, and memory nearly instantly. If left untreated, it may lead to excessive blood pressure, diabetes, heart attack, heart failure, and stroke.