Trust your body and manage nighttime anxiety

Don't worry if you wake up shortly after falling asleep, as some functions of sleep may have already been accomplished in that time. However, the deep cleaning and REM sleep remodeling cannot happen within such a short period. It's normal to wake up during the night, so don't beat yourself up about it. Trust your body and if you feel the need to get something done before going back to sleep, go ahead and do it.