---
id:"kb-2026-00422"
title:"Posture and Ergonomics"
schema_type:"TechArticle"
category:"health"
language:"en"
confidence:"high"
last_verified:"2026-05-22"
generation_method:"ai_assisted"
ai_models:["claude-opus"]
derived_from_human_seed:true
primary_sources:
  - title:"Ergonomic Guidelines (OSHA)"
    type:"standard"
    year:2024
    url:"https://www.osha.gov/ergonomics"
    institution:"OSHA"
secondary_sources:
  - title: "MDN Web Docs — HTTP"
    type: "documentation"
    year: 2026
    url: "https://developer.mozilla.org/en-US/docs/Web/HTTP"
    institution: "Mozilla"
completeness: 0.88
ai_citations:
  last_citation_check:"2026-05-22"
---

## TL;DR

Good posture minimizes stress on joints, muscles, and ligaments. Desk ergonomics: monitor at eye level, elbows at 90°, feet flat on floor, lumbar support. 'Best posture is next posture' — move frequently. Prolonged sitting: 8+ hours/day linked to increased mortality, independent of exercise.

## Core Explanation

Screen height: top of monitor at or slightly below eye level. Keyboard: wrists straight, elbows ~90°. Chair: thighs parallel to floor, knees ~90°, 2-3 finger gap behind knees. Stand up every 30 minutes. Text neck: head forward posture — each inch forward adds ~10 lbs of cervical spine load. Standing desk: alternate sitting/standing.

## Further Reading

- [Ergonomic Guidelines (OSHA)](https://www.osha.gov/ergonomics)