Align your circadian rhythm with our help.

We test the products, so you can buy the stuff that works. We write guides too, check em’ out!

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Optimize Your Light

We’ve spent a lot of time testing the best lighting products, from light therapy lamps to glasses, to light bulbs, so you can be sure you’re getting the best of the best!

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Download the Circadian Blueprint

Discover the 20 circadian strategies that will transform your sleep and performance!

A Comprehensive Guide

An interactive table of contents you can explore at your own pace.

Recommended Products

Recommended products and tools make it easy to get started.

Actionable Information

Numerous action sections take away the guesswork.

Explore Our Lighting Product Databases

Find the best full-spectrum light bulbs, smart lights, and light therapy lamps with our extensive databases!

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Optimize Your Sleep

Learn how to get the best sleep of your life with our reviews and strategies.

Explore Our Blue Blocker Database

Find the perfect pair of blue-blocking glasses in the world’s largest third-party tested database!

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