curl -X GET "https://api.fitsociety.io/public/v1/workout/performance/muscle-heatmap" \
  -H "Authorization: Bearer <access_token>"

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.fitsociety.io/public/v1/workout/performance/muscle-heatmap', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.fitsociety.io/public/v1/workout/performance/muscle-heatmap"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "data": {
    "range": {
      "startDate": "2026-04-12T10:00:00.000Z",
      "endDate": "2026-04-12T10:00:00.000Z",
      "days": 7
    },
    "total": {
      "raw": {
        "chest": 18,
        "shoulders": 12,
        "triceps": 8
      },
      "normalized": {
        "chest": 18,
        "shoulders": 12,
        "triceps": 8
      },
      "maxValue": 18,
      "topMuscles": [
        {
          "muscle": "chest",
          "value": 18
        }
      ]
    },
    "daily": [
      {
        "date": "2026-04-12",
        "raw": {
          "chest": 18,
          "shoulders": 12,
          "triceps": 8
        },
        "normalized": {
          "chest": 18,
          "shoulders": 12,
          "triceps": 8
        },
        "maxValue": 12,
        "topMuscles": [
          {
            "muscle": "chest",
            "value": 18
          }
        ]
      }
    ]
  },
  "meta": {
    "requestId": "4f849d7d-f4f1-45cc-b4b7-3984a3d17f83",
    "rateLimit": {
      "limit": 10,
      "remaining": 9,
      "resetSeconds": 1
    }
  }
}

{
  "error": {
    "code": 400,
    "key": "request.invalid",
    "message": "The request is invalid."
  },
  "meta": {
    "requestId": "4f849d7d-f4f1-45cc-b4b7-3984a3d17f83",
    "rateLimit": {
      "limit": 10,
      "remaining": 9,
      "resetSeconds": 1
    }
  }
}

{
  "error": {
    "code": 500,
    "key": "server.internal_error",
    "message": "An unexpected Public API server error occurred."
  },
  "meta": {
    "requestId": "4f849d7d-f4f1-45cc-b4b7-3984a3d17f83",
    "rateLimit": {
      "limit": 10,
      "remaining": 9,
      "resetSeconds": 1
    }
  }
}