Powernap
Från Wikipedia:
Power-napping
Power-napping is thought to maximize the benefits of sleep versus time. It is used to supplement normal sleep, especially when a sleeper has accumulated a sleep deficit.
Various durations are recommended for power-naps, which are very short compared to regular sleep. The short duration of a power-nap is designed to prevent nappers from sleeping so long that they enter a normal sleep cycle without being able to complete it. Entering a normal sleep cycle, but failing to complete it, can result in a phenomenon known as sleep inertia, where one feels groggy, disoriented, and even more sleepy than before beginning the nap. In order to attain maximum post-nap performance, it is critical that a power-nap be limited to the beginning of a sleep cycle, specifically sleep stages I and II.
Scientific experiments (see Benefits section below) and anecdotal evidence suggest that an average power-nap duration of around 20-30 minutes is most effective. People who regularly take power-naps may develop a good idea of what duration works best for them, as well as what tools, environment, position, and associated factors help induce the best results. Some people take power-naps out of necessity, for example, someone who doesn't get enough sleep at night and is drowsy at work may sleep during his or her lunch break. Others may prefer to take power-naps regularly even if their schedules allow a full night's sleep. Mitsuo Hayashi, Ph.D. and Tadao Hori, Ph.D. have demonstrated that a nap improves mental performance even after a full night sleep.
Difference between a power-nap and a catnap
While a power-nap and a catnap can be considered to be synonymous in terms of duration and effect, the vernacular usage often makes a behavioral distinction: a power-nap involves a break from activity, while a catnap is of a more leisurely nature. Thus, one may take a power-nap in the middle of a busy work day, and a catnap on the couch during a lazy afternoon.
The caffeine nap
A caffeine nap is a power nap that is preceded by the intake of a caffeinated beverage or a caffeine pill. The reasoning is that it takes about 15-20 minutes for the caffeine to take effect, so one should awaken doubly energized.
Den där koffeinnap:en låter ju spännade, he he.
