What should I know about schlafphasen erklaert wissenschaft tipps besseren schlaf?

The question about sleep phases and tips for better sleep is not addressed in the provided context. While sleep science is well-established (e.g., circadian rhythms, REM/NREM cycles), the given knowledge snippets focus on genetic variants like FTO, APOC3, and ADRB3, and general health topics such as fiber-rich foods. No specific information about sleep phases or sleep improvement strategies is present. Therefore, the evidence level is 'unclear' for this specific query based on the provided context. General sleep hygiene advice (consistent schedule, dark/cool room, limited screen time) is supported by broader research but not by the context. Caveat: consumer DNA tests like MyBody-X do not currently offer sleep phase analysis based on the available material.