Sleep is essential to maintain good health. While the ]]>CDC]]> recommends that adults get seven to nine hours of sleep a night, the type of sleep is also important, meaning that the sleep cycle enters all the four stages NREM sleep and REM sleep. ]]>This image shows what this looks like]]>.
Stage One: Drowsiness
Joanna Saisan MSW, Tina de Benedictis, Ph.D., Suzanne Barston, and Robert Segal, M.A., authors of the article ]]>“Understanding Sleep: Deep Sleep, REM Sleep, Cycles, Stages, and Needs,”]]> state that the first stage of sleep, or drowsiness, lasts between five and ten minutes. During stage one, the person can be awakened without much effort; it becomes more difficult in the later stages of sleep. Eye movement is minimal, as there is less muscle activity. ]]>The University of Washington]]> adds that the EEG rate for stage one sleep is 6-8 Hz, which is a low amplitude; in comparison, the EEG rate for the waking stage is 8-25 Hz, which also has a low amplitude. Stage one is the first stage of NREM sleep, or non-rapid eye movement sleep.