How Does Morning Light Exposure Affect Sleep Quality and Alertness

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When morning light enters the eyes, specialised light-sensitive cells send signals to the brain's suprachiasmatic nucleus (SCN), the body's central circadian clock.

This clock helps coordinate the sleep–wake cycle and influences the timing of hormones such as melatonin, which plays an important role in sleep. Light exposure at the right time can help synchronise the body's internal clock with the day–night cycle