Computer information systems graduates, who numbered 240,508, earned less at a median $62,000 per year, with the 25th percentile making $45,000 and the 75th percentile receiving $86,000, which was a difference of $41,000. Both types of graduates reported 94 percent employment, with 92 to 94 percent working full-time.
The sleep cycle is repeated many times throughout the night. Each sleep cycle lasts 90 minutes, usually it takes about 30 minutes to enter dreamland. Therefore, a lucid dream can last up to one hour. After that, the sleep cycle will restart again.
In a study led by Rosekind, pilots on transpacific flights who napped for an average of 26 minutes had 34% fewer performance lapses and were half as likely to show signs of physiologic sleepiness. Even a nap as short as 10 minutes can benefit you, as your brain quickly moves into slow-wave sleep, Dinges says. If you sleep longer than about 40 or 45 minutes, you may feel groggy when you wake up. This is called sleep inertia, and happens when you wake from a deep sleep.