
Why do I wake up tired every morning?
Reading time: 6 min In short: You sleep 7 to 8 hours… and yet you wake up tired? It's not always a question of duration. Quality, rhythm, environment: everything plays a role. And light...

Why Lack of Sleep Makes Us Sick
Reading time: 7 min. In short: Lack of sleep weakens our immune defenses. And conversely, getting sick harms our quality of sleep. A truly vicious cycle, one that can be broken with the...

Stress or light: which is sabotaging your sleep?
In short: We often think that stress is the sole culprit behind our insomnia. But light—especially artificial light—plays a much more insidious role. In this article, we'll help you identify th...

Understanding the circadian cycle in 5 minutes
Reading time: 9 min. In short: The circadian cycle is our internal clock. It regulates our energy, mood, sleep, and much more. Understanding how it works—and especially how lighting c...

Why do teenagers sleep so badly?
Reading time: 8 min. In short: Teens aren't just "screen-obsessed" or "lazy." Their internal clocks naturally shift during puberty, delaying their sleep onset. Add to that a busy soci...

Blue light: what should we really think about it?
Reading time: 8 min. In short: Blue light has a bad reputation, accused of disrupting our sleep, damaging our eyes, and disrupting our biology. But should it really be banned? Not so fa...

Does light influence our mood?
Reading time: 8 min. In short: Our mood is directly linked to light. Too dim? Fatigue sets in. Too cold? Anxiety rises. Too erratic? Morale plummets. This article explores how to adapt ...














