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Your afternoon coffee feels harmless, yet caffeine and sleep are tied together long after the cup is empty. In this guide you will learn how caffeine blocks your sleep si...
Better sleep
List of articles
Caffeine and Sleep: When to Drink Your Last Coffee
Red Light Bulbs for the Evening: How to Choose Wavelength, Brightness and Flicker
When the clocks go back, your evenings suddenly get longer and darker, and most of us fill them with bright white LED light. A red light bulb is one of the simplest ways ...
Mitochondriak® Red Bulbs and Blue Light Blocking Glasses: A Real Spectrometer Test
How much blue light does a red light bulb really give off, and what do blue light blocking glasses let through when you check them with an instrument instead of your eyes...
Weather Sensitivity: Why Changes in Weather Affect Mood, Sleep and Pain
Does your head throb before the rain, or do your knees ache when a cold front rolls in? Weather sensitivity is a real experience for many people. This guide explains how ...
Chronotype Explained: How to Find Yours and Build a Light Routine Around It
Your chronotype is your body's natural preference for when to sleep and wake, and it explains why some people spring out of bed at 6 a.m. while others hit their stride at...
Seasonal Affective Disorder and Light Therapy: How Light Helps You Beat the Winter Blues
Seasonal depression light therapy uses bright light to ease the low mood, low energy and oversleeping that arrive with darker months. It does not cure clinical depression...
Best Blue Light Blocking Glasses for Evening Use: A Guide to Protecting Your Sleep
Blue light blocking glasses worn in the evening are one of the simplest tools for protecting your melatonin and your sleep quality. The right pair filters out the wavelen...
How to Naturally Raise Melatonin in the Evening for Better Sleep
Melatonin is your body's natural signal that it's time to sleep, and the single biggest factor controlling it is light. By managing your evening light environment, you ca...
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Sleep stages and circadian rhythm: how your sleep works and how to improve it
Quality sleep is not a luxury. It is a biological process shaped by sleep stages, circadian rhythm and light. Once you understand how NREM, REM, melatonin and morning lig...
Daylight Saving Time and Your Circadian Rhythm: How to Adjust Without Jet Lag
Daylight saving time ends this October, and if you feel groggy, foggy, and out of sync for days afterwards, you are not imagining it. The time change nudges your circadia...