{
  "resourceType": "ActivityDefinition",
  "id": "crocodile-breathing",
  "url": "https://bodyiq.dev/fhir/ActivityDefinition/crocodile-breathing",
  "version": "1",
  "name": "CrocodileBreathing",
  "title": "Crocodile Breathing (Prone Diaphragmatic)",
  "status": "draft",
  "experimental": true,
  "description": "Lie prone with forehead resting on stacked hands. Breathe so the belly presses into the floor on inhale and releases on exhale. The prone position gives clear proprioceptive feedback that the diaphragm is descending posteriorly into the lower ribs.",
  "useContext": [
    {
      "code": {
        "system": "http://terminology.hl7.org/CodeSystem/usage-context-type",
        "code": "user"
      },
      "valueCodeableConcept": {
        "text": "difficulty: beginner"
      }
    }
  ],
  "topic": [
    {
      "coding": [
        {
          "system": "https://bodyiq.dev/fhir/CodeSystem/exercise",
          "code": "crocodile-breathing",
          "display": "Crocodile Breathing (Prone Diaphragmatic)"
        }
      ]
    }
  ],
  "kind": "ServiceRequest",
  "dosage": [
    {
      "text": "5–10 minutes, 1–2×/day; especially valuable for users who chest-breathe."
    }
  ],
  "usage": "Evidence: moderate.",
  "note": [
    {
      "text": "Belly should push into the floor on every inhale"
    },
    {
      "text": "Low back should rise slightly with breath, then settle on exhale"
    }
  ],
  "extension": [
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "Diaphragm"
        },
        {
          "url": "role",
          "valueCode": "primary"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "5798000"
          }
        }
      ]
    },
    {
      "url": "https://bodyiq.dev/fhir/StructureDefinition/muscle-involvement",
      "extension": [
        {
          "url": "muscle",
          "valueString": "External Intercostals"
        },
        {
          "url": "role",
          "valueCode": "synergist"
        },
        {
          "url": "coding",
          "valueCoding": {
            "system": "http://snomed.info/sct",
            "code": "53967007"
          }
        }
      ]
    }
  ]
}