Episode 8 — Decision Fatigue
Why Your Brain Isn’t Designed for Modern Work
Season 2 · Week 8 of the 10-Week Cognitive Athlete Training Cycle
From the moment you wake up, your brain is making decisions.
What to prioritise.
Which emails to answer.
What to say in meetings.
What problems to solve.
Individually these decisions seem small. But across a full day they accumulate — and eventually the system that makes decisions begins to slow down.
Not because you’re lazy.
Not because you lack discipline.
But because your brain’s cognitive bandwidth is limited.
In this episode of The Cognitive Athlete Podcast, Clint explains why modern work environments place an enormous load on the brain’s decision-making system — and how decision fatigue quietly erodes performance.
Drawing on behavioural science, neuroscience, and examples from high-performance environments like Formula 1, Clint explores why elite performers protect their decision capacity just as carefully as athletes protect their physical energy.
Inside this episode:
• What decision fatigue actually is
• Why the brain’s prefrontal cortex has limited cognitive bandwidth
• How interruptions, task-switching, and information overload drain mental resources
• What research from Sendhil Mullainathan and Eldar Shafir reveals about cognitive overload
• Why high-performance environments use structure, routines, and checklists to protect decision quality
You’ll also learn three simple ways to protect your decision bandwidth:
1️⃣ Identify your daily decision peak
2️⃣ Reduce unnecessary decisions with simple systems
3️⃣ Close cognitive loops so unfinished thinking doesn’t drain your brain
Because performance rarely collapses because people stop trying.
It collapses when their cognitive bandwidth is gone.
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