Extend your time in bed if necessary to get at least 7 hours of sleep each night, providing ample time for REM cycles to occur.
如果有必要每晚至少睡7个小时，可以延长睡觉时间，从而留有足够的时间来进行深度睡眠。
Extend your time in bed if necessary to get at least 7 hours of sleep each night, providing ample time for REM cycles to occur.
如果有必要每晚至少睡7个小时，可以延长睡觉时间，从而留有足够的时间来进行深度睡眠。
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