When you are finished sleeping at night, you can take a nap and still have REM sleep. But how long does it last for? If I wake up at 6 am, will I still go directly into REM at about 4 or 5 pm?
When you are finished sleeping at night, you can take a nap and still have REM sleep. But how long does it last for? If I wake up at 6 am, will I still go directly into REM at about 4 or 5 pm?