That's why we sometimes wake up tired already
Bashny.Net
Site has learned that 40% of people at least once in their lives suffered from "tedious sleep." This means that they woke up just as or even more tired than when I went to bed. According to Dr. Charles Pollack, "is how a person feels when waking up - regardless of the time of day - depends on the stage of sleep in which it was time to wake up." If a person was in a stage of "REM sleep» (REM) and in that time, I woke up, he feels rested. However, if the "REM" disturbed sleep apnea or other condition, such as depression, obstruction of the respiratory tract with a cold or even the influence of drugs, "people are likely to wake up in the phase of" slow wave sleep "- a deep sleep in which is not observed rapid eye movement" . < So long as a person does not fall upon awakening in REM sleep, he would "feel sleepy," despite the fact that sleep is enough.
Dr. Tom McCoy points out that a person needs a "full sleep cycle, to feel rested, and if your sleep is too short for this, the quality is likely to be low. Therefore, you can feel even more tired, because missed the right exit from the cyclic sleep, which is needed to feel