The question of when is the best time to wake up - early in the morning or whatever happens, is the subject of numerous studies in the field of chronobiology, neurophysiology and somnology. Scientists are studying the influence of circadian rhythms, sleep quality and sleep-wake patterns on a person's physical and mental health. Circadian rhythms are biological processes that occur in the body with a frequency of about 24 hours. They are regulated by an internal “clock” – the suprachiasmatic nucleus of the hypothalamus. One of the key circadian processes is the regulation of sleep and wakefulness. Research shows that the best time to wake up coincides with the body's most active period, called acrophase (Duffy & Wright, 2005). For most people, acrophase occurs in the morning hours, from about 9 to 11 am. At this time, the body is most active, body temperature rises, the production of hormones (including cortisol) increases, concentration and cognitive functions improve (Schmidt et al., 2007). Thus, from a circadian rhythm perspective, it is best to wake up in the morning when the body is most prepared to be active. Sleep quality also plays an important role in determining the optimal time to wake up. Research shows that lack of sleep or sleep disturbances (such as sleep apnea) negatively impact cognitive function, mood, and physical health (Shen et al., 2016). The most restorative sleep is sleep that lasts at least 7-9 hours and includes all phases of the sleep cycle, including REM sleep (Hirshkowitz et al., 2015). If a person wakes up early in the morning but does not get enough sleep, this can lead to to the development of chronic sleep deficiency and related problems. On the other hand, if a person wakes up later but gets enough sleep, this may be more beneficial for his well-being and performance. Finally, sleep-wake patterns are also important for health. Irregular or frequent sleep disturbances can negatively impact circadian rhythms and lead to the development of sleep disorders such as insomnia or hypersomnia (Staner, 2009). Maintaining a stable sleep-wake pattern helps the body synchronize with external light-dark cycles, which promotes the normal functioning of biological rhythms. In conclusion, from the point of view of the scientific evidence on circadian rhythms, sleep quality and sleep-wake patterns, it is best to wake up in the morning, during the acrophase period (from about 9 to 11 o'clock). However, it is also important to ensure adequate sleep (7-9 hours) and maintain a stable sleep-wake schedule. Each person is different, and the optimal time to wake up may vary depending on chronotype, age, lifestyle and other factors. But in general, waking up early in accordance with the body's circadian rhythms is most beneficial for health and performance. My websiteChannel in cart+7 916 485-34-36