Josh TrentIdentity Transformation Architect and award winning Host of the Wellness + Wisdom Podcast—a decade-strong show with over 750 episodes and 15M downloads.

This is why circadian rhythm matters to your health! 20% OFF UBlockout with code "JOSH20"

10 Dec 2025 · 1 min

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Short excerpt from a YouTube video by Josh Trent in which an unnamed speaker and Josh discuss the role of darkness in circadian biology and sleep recovery. The speaker recommends ~100% blackout for optimal recovery; Josh recounts being introduced to the company ublockout, endorses its effectiveness ("literally zero dark 30"/"no light whatsoever"), and notes he's begun tracking sleep and subjective feeling after moving into a new place about six months ago.

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From a circadian biology perspective, the darker the room, the better your body will recover. It's about 100% blackout, and if your circadian rhythm is off, then recovery is poor.
Kristin connected me with this company called ublockout, which is incredible. Like, literally zero dark 30. Like, no light whatsoever. I never really had a sleep sanctuary. It wasn't a thing. I would turn off lights and put phones off and everything else, but the light quotient was missing, and it's been missing for a long time. We just moved into our new place about six months ago, so I'm really excited to see on a continuous basis, not just my data from my ring, but how I actually feel. That's the point, isn't it, to feel better?