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The Productivity Show

Ultradian Rhythms: How 90-Minute Focus Blocks Changed Everything (TPS613)

The Productivity Show

Asian Efficiency

Business, Careers, Education, Management, Self-improvement

4.6549 Ratings

🗓️ 18 May 2026

⏱️ 42 minutes

🧾️ Download transcript

Summary

Ever feel like your focus just disappears after an hour of work? It’s not laziness—it’s biology. In this episode, we dive deep into the science of ultradian rhythms and why the popular “90-minute focus block” is both powerful and often misunderstood. We’ll separate productivity mythology from real biology, showing you how to identify your own […]

Transcript

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0:00.0

Thanks to Shopify for supporting the productivity show. Shopify is a platform designed for anyone to sell anywhere, giving entrepreneurs like ourselves the resources once reserved for big business.

0:09.6

Sign up for your $1 per month trial period at Shopify.com slash TPS.

0:19.4

Welcome to the Productivity Show, a podcast where we believe that people like you can get the

0:23.7

important things done without sacrificing your health, family, and things that matter to you.

0:28.4

If it's your first time listening, welcome to the show.

0:30.8

I'm Tam Fam all the way from Austin, Texas.

0:33.4

And I'm the founder and CEO of Asian Efficiency, where we help people become more productive at work in a life.

0:39.2

And I do this podcast together with my co-host, Brooks Duncan, all the way from Vancouver, Canada.

0:44.6

How are you today, Brooks?

0:46.2

I'm all right.

0:47.2

Ongoing issues that we've been talking about on the show lately.

0:50.9

My mouth is full of stitches.

0:52.8

So my speaking will probably be short this time,

0:55.5

which is probably good for the listeners. But obviously I'm out of it because instead of hitting

1:00.3

record, I hit leave session right before recording this. So we'll see how this episode goes.

1:05.3

We'll see how drugged up Brooks does on this episode.

1:08.9

Yeah. Brooks is undergoing some health issues with nothing like, you know,

1:14.7

endangering his life or anything, but when you have dental visits and surgery in the

1:20.1

same sentence, that is typically not a good recipe for great things, but I'm happy

1:25.6

you're back.

1:26.8

I'm happy we can do this podcast. And today's topic

1:29.7

is all about focus and how we can use 90-minute cycles to help us be more productive and

...

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