What should I know about Schlaf Alltag?

The question about sleep in daily life is very broad and not specifically addressed by the given context. Generally, sleep plays a fundamental role in health, cognition, and metabolism. Adults need 7–9 hours of sleep per night. Chronic sleep deprivation increases the risk of cardiovascular disease, diabetes, obesity, and mental disorders. The circadian rhythm is influenced by light, meal timing, and physical activity. Genetic variants (e.g., in CLOCK, PER, CRY) can affect sleep architecture and chronotype (morning/evening preference), but effects are usually small. Direct-to-consumer DNA tests like MyBodyHealth's may analyze such variants, but they do not replace clinical diagnosis for sleep disorders. For daily life, consistent bedtimes, reduced screen time before bed, and a dark, cool sleep environment are evidence-based measures. If problems persist, a doctor should be consulted. The evidence for genetic testing to optimize sleep is currently 'unclear' because large intervention studies are lacking.