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slow-wave sleep |
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As each participant slept that night, the researchers delivered the current through scalp electrodes for 30 minutes just before slow-wave sleep started. People who exercise regularly fall asleep faster, sleep for a longer time, spend less time awake during the night, and get more of the deeper slow-wave sleep than people who don't exercise. During the night a person alternates between slow-wave sleep, also called nonrapid eye movement (NREM) sleep, and rapid eye movement (REM) sleep, The entire cycle of slow-wave sleep and REM takes about 90 minutes. |
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