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The New Science Of The Body Clock And How It Can Revolutionise Your Sleep and Health with Professor Russell Foster #292

Feel Better, Live More with Dr Rangan Chatterjee

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The Importance of Morning Light for Sleep and Circadian Rhythms

Our internal biological day needs to be synchronized with the external astronomical day, and exposure to morning light is crucial for aligning our biological clock with the natural light-dark cycle. For most people, morning light helps to advance the body clock, making them go to bed earlier and wake up earlier. Conversely, evening light delays the body clock, leading to later bedtimes and wake-up times. Lack of morning light exposure can lead to a delayed biological clock, affecting the sleep-wake cycle and overall daily activity. Studies have shown that individuals with a preference for evening activities tend to receive more evening light, which further delays their biological clock. Therefore, morning light plays a critical role in setting the biological clock and aligning our activities, including the sleep-wake cycle, with the appropriate time of day.

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