{
  "schema": "vedokrok.public-item.v1",
  "release_id": "MHC-RPUB-20260920-75ad787a",
  "url": "/knowledge/use-movement-as-a-state-shift-not-a-productivity-promise",
  "id": "MHC-D-RESEARCH-1254",
  "version": "0.1.0",
  "title": "Use movement as a state shift, not a productivity promise",
  "summary": "Movement can change the cognitive state. It does not sign the deliverable for you.",
  "kind": "protocol",
  "body": "Use a brief bout of exercise or brisk movement as a low-cost state-change experiment, then judge the next work block by its output. A 2025 meta-review found a small-to-medium average positive acute-exercise effect across cognitive outcomes, with timing affecting the size of the effect. That supports testing movement as preparation or recovery; it does not justify promising a specific productivity gain or chasing an exact universal dose.",
  "limits": [
    "The evidence concerns average acute cognitive effects, not individual productivity, treatment of fatigue or a specific exercise prescription. Use ordinary exercise-safety judgment and medical guidance where relevant."
  ],
  "topics": [
    "union-cognitive-state-and-offloading"
  ],
  "intents": [],
  "source_ids": [
    "RS-1A4D21E655F196D1"
  ],
  "evidence": [
    {
      "claim": "A 2025 meta-review of 30 meta-analyses covering 383 unique studies and 18,347 participants found a small-to-medium average positive effect of acute exercise on cognitive function, with effects varying by when cognition was measured relative to exercise.",
      "source_id": "RS-1A4D21E655F196D1",
      "role": "supports",
      "note": "An average cognitive effect is not evidence that a short exercise bout will improve a particular work output, and the review does not define one optimal exercise prescription for productivity.",
      "locator": "Abstract"
    }
  ],
  "use_when": [
    "You are mentally flat, stuck in one posture or about to start a demanding block and a short movement break is feasible."
  ],
  "avoid_when": [
    "The evidence concerns average acute cognitive effects, not individual productivity, treatment of fatigue or a specific exercise prescription. Use ordinary exercise-safety judgment and medical guidance where relevant."
  ],
  "example": "If you are stuck before a design pass, take a short brisk walk, return to the same explicit design question and compare the resulting options with your normal baseline.",
  "check": "The movement has a clear before-and-after task, and the decision to keep it is based on useful work or recovery rather than the existence of a neuroscience story.",
  "steps": [
    "Choose a safe movement bout that fits your normal health and environment.",
    "Return to one defined cognitive task instead of browsing for a better 'brain protocol.'",
    "Use the same task-quality check you would have used without the movement.",
    "Keep the habit only if it helps your real work or recovery without creating another ritual."
  ],
  "sources": [
    {
      "id": "RS-1A4D21E655F196D1",
      "title": "Effects of acute exercise on cognitive function: A meta-review of 30 systematic reviews with meta-analyses",
      "url": "https://pubmed.ncbi.nlm.nih.gov/39883421/"
    }
  ],
  "relations": [],
  "collections": [
    {
      "id": "RC-EF3925703702450D",
      "title": "Design the task around cognitive limits instead of fighting them",
      "url": "/collections/design-the-task-around-cognitive-limits-instead-of-fighting-them"
    }
  ]
}