Articles
Evidence-led writing on desks, food, movement, sleep, focus and AI · for people whose job keeps them at a screen.
Does an Ergonomic Chair Help Back Pain? What the Evidence Actually Shows
Nobody has shown that an ergonomic chair reduces low back pain, and the chair-intervention evidence is rated very…
How Long Does It Take to Refocus After an Interruption?
The famous 23 minutes and 15 seconds does not appear in the paper it is credited to. What…
Can You Catch Up on Sleep on Weekends? Two Literatures, Two Answers
Two bodies of evidence answer the weekend catch-up question in opposite directions: short-run laboratory markers and a 13-year…
Does Drinking Water Help You Focus? The Studies Were Not Done at a Desk
The dehydration-and-cognition studies induced fluid loss with treadmill walking in a warm room and a prescription diuretic, and…
How High Should Your Monitor Be? The Standards Give a Number, the Trials Give a Shrug
Every ergonomics page hands out the same monitor height rule as if it were a clinical finding. It…
How Often Should You Get Up From Sitting? One Trial Compared Five Schedules
No health authority has set an interval. One small randomised crossover trial compared five sitting-break schedules head to…
How Long Before Bed to Stop Drinking Coffee (Your Cutoff Is Not 2pm)
The 8.8-hour figure everyone quotes is a modelled output for a single 107 mg cup, not a validated…
Do Blue Light Glasses Work? The Three Claims the Marketing Blurs Together
Blue-light eyewear is sold on three separate promises (less eye strain, eye protection, and better sleep) that get…
Cognitive Offloading and AI: Why Your Confidence Outruns Your Code
The popular story is that AI makes you dumber. The evidence supports something narrower and more useful: offloading…
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