What happens if I get bright light before my temp minimum time?
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Exposing your eyes to bright light before your body's temperature minimum can have specific effects on your circadian clock. If you view bright light in the four to six hours before your temperature minimum, it tends to delay your circadian clock. This means you might end up going to bed later and waking up later in subsequent days, a process known as a phase delay 1 2.
Conversely, if bright light is viewed in the hours after your temperature minimum, it can advance your clock, making you want to go to bed and wake up earlier 1. Understanding and strategically using this mechanism can help in adjusting sleep patterns and adapting to changes like travel across time zones 2.
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