Light has the strongest impact on our circadian rhythm.
My favorites are True Dark:
Late Afternoon (Yellow): Daylights™ Amber Elite - TrueDark®
Bedtime (Red): Twilights Elite - TrueDark®
What it is
Evening glasses filter out the dirty light that signals our bodies to stay awake.
There's a lot more to it than just the color of the lenses. Don't get suckered into cheaper, or even just prettier glasses. To an extent, less well-engineered lenses are better than nothing. The wavelengths filtered matter. That takes effective engineering.
What it does
Light signals to our bodies whether we need to be gearing up for a day of foraging for food and maybe running from tigers or winding down for sleep. This happens in human as well as every other living creature. However, technology has evolved far faster than our biology. We now litter our eyes with light signals telling our body it's time to be waking up - not at all time for sleep. This impacts melatonin production, among other things.
Filtering out the "dirty light" let's our bodies operate closer to how they've evolved over millions of years.
How much and when
I put on the yellow set starting late afternoon - while making dinner, etc. If I'm driving home from a dinner out, I'll wear them driving.
I put on the reds when it's time for brushing my teeth, etc. Do not wear the reds driving.
When you get accustomed to living in the lower light world before sleeping, you can actually feel the physiological response to "normal lighting" in your house when you don't have the glasses on.
Note that I have several lights in my house outfitted to turn red when I double-cycle them on-off. So even without the glasses, the only dirty light getting in is through the windows, and from my phone. (That'll be another post.)
Where to get it
Late Afternoon (Yellow): Daylights™ Amber Elite - TrueDark®
Bedtime (Red): Twilights Elite - TrueDark®
Ra Optics also has the science figured out: Ra Optics | Glasses That Make You Feel Good
Discount Codes
Link through Ben Greenfield: Ben Greenfield | Ra Optics
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