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What Is Junklight

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Circadian Rhythm

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TrueDark Tech

Why TrueDark

Founder of Biohacking, Dave Asprey, knows his light. Wrong amounts of blue (junk) light can drain your energy and mess with your sleep. TrueDark technology filters all light waves the way your body needs them. Un-junk your light! 

What is Junklight?

Junk light refers to artificial light sources – such as LEDs, compact fluorescent (CFLs), or any device with an LED screen (computers, smartphones, tablets, and laptops). These light sources amplify the blue, green and purple parts of the light spectrum. Your body’s natural sleep-wake cycle, also known at your circadian rhythm, is incredibly sensitive to these particular wavelengths. When exposed to any of them at the wrong time of day or night, you end up with junk light, which can directly impact your sleep, mood, focus, and cognitive function. 

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Since 2009

Sleep Cycle

Circadian Rhythm

Your circadian rhythm, also known as your sleep/wake cycle, is an internal clock that cycles between sleepiness and alertness at regular intervals over an approximate 24-hour period.   

This cycle – comprised of a “master clock” that orchestrates many other smaller clocks – is important for regulating various processes throughout your body, such as knowing when to wake up in the morning, when to eat, and when to sleep at night. The master clock is located in the suprachiasmatic nucleus (SCN), and the primary cue is the light–dark cycle, around which most mammalian (and those of all living organisms) functions have evolved (NCBI).  

The SCN is notably located in the hypothalamus within the brain, where the neurons have a dedicated link to the eye. So any time there is a change in environmental lighting, information enters the eye and is directly transferred to the master clock. The SCN then influences daily rhythms in your sleep-wake cycle, hunger-satiety, body temperature, and hormone levels.  

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TrueDark Daylights glasses filter appropriate spectrums of light waves to signal your brain to create energy.

TrueDark Twilights glasses red lens provide red light waves that signal the brain to product melatonin for sleep.

TrueLight LED Light Therapy Devices amplify the healing IR+FIR waves found in nature to signal rejuvenation.

diagram showing how to safeguard your vision

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Avg Min Screen Time

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Percent Light Selection

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Hour Solution

TrueDark Technology

TrueDark® is a health and wellness performance brand created by Biohacked (and co-founded by Dave Asprey) that uses proprietary technology to help people take more control of the lighting around them and  improve their quality of life. TrueDark® products essentially optimize your exposure to harmful light – day or night – which in turn helps restore  your natural circadian rhythm and bring balance to your mind and body.  Think of TrueDark® eyewear as “noise-canceling headphones for your eyes” — that protect your internal processes from the disruption, chaos and noise of the world. They help you sleep, feel and live better. 

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