10/02/2026
Exhaustion isn’t a personality trait.
Your brain is a high-energy organ.
It runs on glucose, oxygen, hydration, and sleep - and it uses them up quickly.
Long hours without breaks, constant input, poor sleep, and under-fuelling reduce your cognitive efficiency.
That’s when you notice:
• Brain fog
• Slower thinking
• Irritability
• Decision fatigue
Mental burnout is often depleted fuel and here's how you can support your biology:
• Eat regularly (not just caffeine)
• Step away from screens
• Take real breaks
• Sleep earlier when you can
When the brain is resourced, clarity returns.