You’ve probably heard this one before — about how the blue light given off by your phone can wreak havoc on your sleep patterns. Your brain needs to identify the absence of blue light in order to produce the sleep hormone melatonin? And because melatonin is what regulates your sleep cycle and tells your body to start winding down for the night, your entire sleep cycle can be disrupted by that last drowsy text you send from bed.
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Light at night means less melatonin - which means poor sleep and a foggy brain the next day. Blue light sends a powerful signal to your brain that it is daytime, but it's not the only problem. All light is a problem. After dark, all light should be reduced, with as little light a...
Endogenous rhythms exist because the body has biological clocks that keep time. Biological clocks can be adjusted by environmental cues, such as changes in temperature.
In humans, the Suprachiasmatic Nucleus (SCN) is the main biological clock that regulates circadian rhythms of sleep. The S...
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