FDA-Backed Performance Proof
Here he shares groundbreaking FDA study findings.
Fully Alive: Unlocking the secrets to your healthier, happier, longer life
May 28, 2026 · 39 min · 14 segments
Wearable technology continues to improve every single day, and Seth Casden is at the forefront of such innovations. Joining Zach Gurick, he talks about his work as the CEO of…
Seth CasdenGuestZach JurekHostNo entities detected.
Tell us all about Celliant, like what exactly is it? How does it work? I personally have been using the sheets and pillowcase and socks now for a while, and I have the wristbands as well, so I'm a benefactor or beneficiary of your work myself personally.
You gotta have some sheets on your bed probably, so I have the pillow and everything else, so it's great.
How does it work? And I'd love to kinda explore some of the, the data and science behind it too on- well, once we get going here.

Um, so the way I like to describe it is we're at the intersection of, of really three ends of science.

You have the material science, which for me was really interesting, the geology, how certain minerals interact with, uh, light and heat.

You have the human physiology of how our bodies and our circulatory and thermal regulation systems work, and then you have the science of infrared and how this energy interacts with the body.

And with Celliant, what we're doing is, is we're taking certain minerals like quartz, silica.

Their natural property is to absorb ambient heat, radiant heat, and then convert that heat energy into light energy, and specifically near and mid and far infrared.

And by grinding those minerals into about one micron particles, which is, to give, um, everyone a frame of reference-Our, you know, the hair on our head is about 100 microns wide, so we're talking about a scale of 100 the thickness of a human hair.

That's the size of our minerals, and then they get added into textiles at the liquid stage.

So like fun fact, pretty much everything outside of cotton starts out as a liquid.

You mix in our minerals or maybe the salt or the sugar you put in the mixture, and then once it's extruded and it comes out like spaghetti from these machines, it's wrapped around cones, and you can think about your grandma knitting, and that, those cones at, at a mass scale are used on huge, you know, looms to make millions and millions of yards of fabrics.

So then that yarn is used to knit this fabric, and then you cut and sew the fabric into whatever finished garments you're making.
Tell us all about Celliant, like what exactly is it? How does it work? I personally have been using the sheets and pillowcase and socks now for a while, and I have the wristbands as well, so I'm a benefactor or beneficiary of your work myself personally.
You gotta have some sheets on your bed probably, so I have the pillow and everything else, so it's great.
How does it work? And I'd love to kinda explore some of the, the data and science behind it too on- well, once we get going here.

Um, so the way I like to describe it is we're at the intersection of, of really three ends of science.

You have the material science, which for me was really interesting, the geology, how certain minerals interact with, uh, light and heat.

You have the human physiology of how our bodies and our circulatory and thermal regulation systems work, and then you have the science of infrared and how this energy interacts with the body.

And with Celliant, what we're doing is, is we're taking certain minerals like quartz, silica.

Their natural property is to absorb ambient heat, radiant heat, and then convert that heat energy into light energy, and specifically near and mid and far infrared.

And by grinding those minerals into about one micron particles, which is, to give, um, everyone a frame of reference-Our, you know, the hair on our head is about 100 microns wide, so we're talking about a scale of 100 the thickness of a human hair.

That's the size of our minerals, and then they get added into textiles at the liquid stage.

So like fun fact, pretty much everything outside of cotton starts out as a liquid.

You mix in our minerals or maybe the salt or the sugar you put in the mixture, and then once it's extruded and it comes out like spaghetti from these machines, it's wrapped around cones, and you can think about your grandma knitting, and that, those cones at, at a mass scale are used on huge, you know, looms to make millions and millions of yards of fabrics.

So then that yarn is used to knit this fabric, and then you cut and sew the fabric into whatever finished garments you're making.
Every episode on Radar is fully transcribed, speaker-labeled, and rich with metadata. Here is a taste of this one. Try Radar for free to see the rest.
3 of 5
FDA-Backed Performance Proof
Here he shares groundbreaking FDA study findings.
Shirt Gives Instant Gym Edge
Hear how a shirt boosts workouts instantly.
Avoiding Amputations With Infrared
He reveals circulation's life-or-limb consequences.
+2 more clips · 4 min 31 sec of audio in all
7 of 23
The rest of this transcript — segmented and speaker-labeled, so you land on the exact moment something was said
All 5 clips — the highlight moments, each cut as its own audio, with a title and a speaker
All 14 segments — the transcript broken into labeled sections, every ad read marked
All 23 topics — jump to every other episode discussing the same subject
Every related episode — other shows Radar links to this one
No account is needed to search Radar.