You Can’t Outsmart the Sun
The Light We’ve Forgotten
I used to wake up and immediately pick up my phone. Scroll for another 10-15 minutes before I got out bed, still tired and wishing for just 15 minutes of sleep. Then at night, I would fall asleep in front of the TV before I forced myself to get up and get ready for bed. The problem was that now I would sleep poorly for the rest of the night. Day in, day out, this was my routine. And I was ALWAYS TIRED. About 10 years ago, on a podcast, I had learned about two new ideas to me at that time: blue light blocking glasses and going for a morning walk before heading to work. My journey with light didn’t end there, as I had so much to learn (and still do!) but that is where it began.
What Happens When We Outsmart the Sun
For billions of years, life on Earth has moved to one rhythm, light and dark. Every sunrise has carried a code, a sequence of wavelengths that tells your cells what to do: wake, repair, reproduce, rest. That’s your circadian rhythm. It’s not a concept; it’s your body’s master clock. And it’s set by light. When morning light hits your eyes, special photoreceptors send messages to your brain, hormones, and mitochondria. These signals kickstart everything from metabolism to mood. But if you start your day behind a window, under LED lights, or wearing sunglasses that filter natural sunlight, your body never gets the message. It’s like missing the conductor’s cue in an orchestra; everything still plays, but nothing stays in tune.
The Eyes That See More Than You Think
Most people think the eyes are for vision. But in truth, they’re your primary light sensors, a biological communication system that feeds your brain real-time data from the environment. Inside your eyes are cells that don’t help you see; they help you live.
• Melanopsindetects blue light around 480 nm and tells your body, “It’s daytime.”
• Neuropsin (OPN5) senses UV-A light, helping your brain make dopamine (motivation), serotonin (happiness), and melatonin (sleep).
• S-opsinabsorbs violet light, improving emotional balance and connection.
• POMC pathways activate under UV and blue light to release beta-endorphins, melanin, and natural anti-inflammatories.
Now imagine putting on a pair of sunglasses that block UV, violet, and short-wave blue light, the very signals your biology relies on. You may look “optimized,” but your brain has no idea it’s morning. You’ve muted the light conversation your body’s been having with nature for 3.8 billion years.
What Happens When That Conversation Stops
When those wavelengths don’t reach your eyes, your body loses direction.
Sleep Suffers
Melatonin, your sleep hormone, is built from serotonin. Serotonin is made in the morning, but only when sunlight touches your eyes. If you miss that signal, melatonin never gets made. You end up with insomnia, restless sleep, and tired mornings.
Energy Dips
Dopamine, the fuel for motivation, depends on UV-A exposure. Without it, focus drops, tasks feel heavy, and the brain slows down. That dull, heavy fatigue after lunch? That’s not just stress. It’s light starvation.
Vitamin D Deficiency
Even in sunny places, up to 80% of people are vitamin D deficient. The cause isn’t lack of sunlight, it’s overprotection from it. Sunscreens, sunglasses, and indoor living block the frequencies that tell your skin to produce this essential hormone.
Mood Flatlines
Violet and shortwave blue light activate S-opsin, the receptor linked to emotional awareness and social connection. Without it, your world feels gray. The spark dulls. The “why” behind your low mood might be simpler than you think; you’re missing color.
Why “Circadian Optimization” Sunglasses Miss the Point
You can’t improve your biology by silencing nature’s signals.
Many so-called circadian optimization sunglasses claim to “filter harmful light” while still keeping your rhythms in check. But the science says otherwise.
By blocking UV, violet, and most blue wavelengths, these lenses rob your body of the very input it needs to function. They protect you from the good along with the bad.
It’s like deciding to “optimize” your breathing by filtering out oxygen.
Light is not the enemy. Mis-timed light is. Artificial light at night confuses your brain. Filtered sunlight by day deprives your biology.
Real circadian optimization means alignment, not avoidance.
When Sunglasses Make Sense
Of course, there are moments when sunglasses are useful:
• On snowy mountains where UV reflection is extreme
• While sailing or skiing in high glare environments
• During long exposure under harsh noon sunlight
But for the rest of daily life, your morning walk, your drive to work, your lunch break, your eyes were meant to meet the sun. That’s how you charge your internal battery.
Practical Ways to Reconnect with Natural Light
1. Step Outside Within an Hour of Waking
Look toward the horizon (not directly at the sun). Ten minutes of morning light tells your brain it’s time to wake.
2. Ditch Sunglasses Early in the Day
Unless glare is unbearable, let full-spectrum light hit your eyes. That’s your biological “reset.”
3. Balance Indoor Light
Replace harsh white LEDs with warmer bulbs. Use dim lighting after sunset to tell your body it’s time to wind down.
4. Protect Your Eyes When It Matters
Wear true blue-blocking glasses indoors at night to shield from artificial light, not outdoors during the day.
5. Get Real Sunlight Breaks
Go for a five-minute sunlight walk between meetings. Even short exposure builds the circadian consistency your cells crave.
Quick Tip: Your mitochondria don’t run on coffee; they run on light. Give them sunlight, and watch energy rise naturally.
You Can’t Out-Innovate the Sun
So here is where my routines truly shifted. I didn’t just stop scrolling when I woke up and wear light harmonizing glasses when watching TV at night, I did a real 180 using the five steps above. And you know what, I am not tired all the time anymore. I sleep well. I wake rested. By embracing my circadian biology, and the SUN, I was able to overcome the days of being a zombie.
But don’t let perfect be the enemy of the good. If all 5 of those steps are overwhelming for you, CHOOSE ONE or TWO. See the sunrise when you wake as opposed to looking at you phone. Block blue light at night to protect your melatonin production. Start somewhere.
Join us. The water is warm.