People in their 20s spend about 50 percent of their sleep in stage 2, and approximately 20 percent of their sleep in rem sleep.
Adults spend over 50% of their time in stage 2 and only 20% in REM sleep. Stage 2 happens when we experience a light slumber, our pulse rate and respiration slow down, and there are five stages to the dream as we sleep. The REM period of the dream, during which we dream, is characterized by intense brain activity and physical immobility.
Sleep with rapid eye movement. REM sleep differs physically from the other sleep stages, which are referred to as non-REM sleep as a whole (NREM sleep, NREMS, synchronized sleep).
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