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Using Light (Sunlight, Blue Light & Red Light) to Optimize Health
Huberman Lab
The Effects of Light on Your Biology
Light arriving on the eyes is absorbed by a particular cell type called the intrinsically photo sensitive ganglion cell, its just a name. In short days, because there's very little light landing on these cells, the duration of meletonian release will be much longer. But in the summer months, much orlight, on average, will land on your eyest because days are longer and you're going to get more light to activate these cells. The earth travels around the sun every 365 days. And depending on where you are on the earth, where you live, you are going to getting more or less light each day on average, depending on the time of year.
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