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The science of productivity: Rewiring your brain for focus 🧠 | Archie Mackintosh (TruProductive)

Burnout, brain fog, and the science of staying sharp in the age of overload

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This week’s Millennial Master is Archie Mackintosh, founder and coach at TruProductive.

Archie doesn’t look like your typical productivity guru, and he’s not. He went from falling asleep in lessons and nearly dropping out of Cambridge to obsessing over neuroscience and building a new playbook for getting things done.

His approach skips the hustle and strips back the “just work harder” noise. Instead, it’s about why your brain struggles with modern work, how burnout really happens, and what actually helps founders reclaim focus and energy.

🔗 Find Archie on LinkedIn



Takeaways from Archie’s episode

1️⃣ Productivity isn’t just outcomes

Chasing goals without learning to enjoy the process leads to burnout and a constant feeling of “never enough.” Agency, gratitude, and curiosity are the real levers.

2️⃣ The brain is built for a different world

Your hunter-gatherer mind wasn’t wired for inboxes, spreadsheets, or Zoom calls. Understanding the mismatch helps you work with your biology, not against it.

3️⃣ True rest means doing less, not more

Most founders think rest is wasted time, but purposeful breaks and “doing nothing” actually recharge focus and fuel creativity.

4️⃣ Sleep is the ultimate performance hack

Dialling in your morning and evening routines is worth more than any supplement or productivity tool. Consistency is the magic ingredient.

5️⃣ Personalisation beats every “productivity hack”

There’s no universal routine. Knowing your own rhythms, experimenting, and tracking what actually works for you is how real change happens.


In this episode we cover:

00:00 Archie's Journey to Productivity

07:59 Defining True Productivity

13:42 Understanding Focus and Productivity

17:16 The Science of Focus States

22:40 Recharging Your Brain

26:53 Practical Steps for Creativity

33:21 Unlocking Creativity Through Sleep and Exercise

35:44 Morning Routines for Better Sleep

47:38 Caffeine: Timing and Effects

51:02 Personalized Eating Windows for Optimal Energy

56:26 The Timeline for Change: How Long to See Results


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