Good Systems · public information library
Why is my concentration worse when I am tired or stressed?
People come here to understand why something in everyday life feels harder, different or more costly than it should — and what might make it work better.
Short answer
Tiredness and stress can make concentration harder because attention and working memory are limited resources.
What this can look like
A full inbox or noisy room may make concentration disappear faster than usual.
Why it can happen
Use shorter blocks, fewer interruptions and external notes when your internal workspace feels full.
What might help
Use shorter blocks, fewer interruptions and external notes.
What the research helps explain
WHO describes burn-out as an occupational phenomenon linked to chronic workplace stress that has not been successfully managed. Australian work guidance recognises that workload, control, support and work design affect wellbeing and performance.
What can vary
Fatigue and cognitive changes can have many causes, including health, sleep, medication, stress and caring load. A public page cannot diagnose burnout, depression or illness; seek appropriate advice for new, severe or concerning changes.
For this situation
For you, do the most demanding task at your clearest available time.
More info and original sources
Poko summarises the relevance of public original sources and links out for anyone who wants to read more.
- Burn-out as an occupational phenomenon — Clarifies the occupational meaning and limits of burn-out.
- Job demands — Explains workload, cognitive demands, control and support as work-design factors.