# Why your smartwatch is so bad at telling you how many calories you burned

> **Newsylist Open Intelligence Dossier** · First detected: 2026-09-21 14:29 UTC · Category: Technology · Sources: 6 · Current Velocity: 3.67

## Key People, Organizations & Locations
Why

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Florida International University | The higher your body fat percentage, the less accurate your smartwatch is at measuring calories you burn when exercising | 2026-09-21 16:17 | [Source Link](https://news.google.com/rss/articles/CBMi6wFBVV95cUxQQXYwWmgyeGhsVDltdWJyUDZPZWRwMzdhNWc1alFLb0RoT2ZGYVgyWGdVNy14Q3ZyczJSUHhoaVMtQmxPckg0eGpwZUJQY3FCSGZKS1g4MXNtN0dxd2FCT2gybjd0d0xTTUc5T2hWOWNYNEZlZHZCRXF2UlZxUHNEdFo3Q0VUYkx1a0E2WWtuVWx5SXc2WWd3Znp0bE1jWFNvcVlSeWtXMEItcXl1UDMzdzBQSkk1X2YycTR2ZmJnbElZNTY1MWcycGdjT3o2ODlmcG8zUzFvNWUyYTd5YUlDalo4SVlDc1JkSnZN?oc=5) |
| The Conversation | The higher your body fat percentage, the less accurate your smartwatch is at measuring calories you burn when exercising | 2026-09-21 14:22 | [Source Link](https://news.google.com/rss/articles/CBMi9wFBVV95cUxNd2k0MHF3TjB5U3dkYVhQVk5SUzVaajczcnZqTTBJRF9mZ3YzcXFydHBOcGF4VGRmWTVib3hDcXBmMjY5ZVpLVldqaHRVQU1QWTZZaFRqVkNpYVRnTTJGZXduWlZ2SHVpN1ZDOWpWa094bEJDNEtxV1hFZDhINW1hTHlRai1LQ1J6djE5SG9lb3VQeDJMQ1pWSzhIUUJuZmFSbWVNUkZMRF9wNVZmM0VZRHZOMW5oUGllUmNmRHMwRzZ0Wm5JbS1xRzlCNjRRNGlVcTZyZjA4cHNPem1aRzZOWUtuX3dMejFNRVUtQ3BWbWlVNVhMWW9n?oc=5) |
| Men's Fitness | Nobody Knows How Many Calories You Actually Burn. Not Your Watch, Not You, Not Science | 2026-09-21 14:22 | [Source Link](https://news.google.com/rss/articles/CBMivAFBVV95cUxPUjNiOGdHak1PZllzSmFIVkVBbFNGYXlxamREMnVnbFhfUHdaSk5mSXkydzdXODhLX3VKeHhzNXpoRzZmRm1faGNfd3RydXVVYmFlLWNwV3J1cmxiQkZNY1lQWkRaMlFGZnRoLXhvV05ubmk5VnprUkFNdjVVNVR4dGhtYnhQZHJPcDlNbzRCYVc0NF85amthanFjVmN5cmlZSkwwTmRfLW5CelM1NlZueVlRY0VzVFJ2MjdoSw?oc=5) |
| Digital Information World | FIU Study Finds Smartwatches Overestimate Calories Burned During Exercise | 2026-09-21 14:22 | [Source Link](https://news.google.com/rss/articles/CBMi1wFBVV95cUxQclNZQ1hhdmV5aGtkTHhiMXNCb0ZITzltX04wczRuQnM4UUtOanlnREt3eEVLb2prUE5KazZ1QnVGa2FRR3pJdnNub3p1QXBzbnQwWXRXUS1YSk5GM3BFbFUzR2RmbTlybnhOMnRJOGtTVldZa0pMUV9EU0V4WE1DeklaZEVBVXhmeExIU1htOFhBM3Q1TWFCS3duZWF6SVVEQ0RJTTk5WGE0ejZPb3owSFJNTzJ3ZnJGQWFISExybmtGT1BBazViTnRoWkROZjUyWkhyWElHVQ?oc=5) |
| tampabay.com | How accurate are fitness smartwatches? Not very, says FIU study | 2026-09-21 14:22 | [Source Link](https://news.google.com/rss/articles/CBMiigFBVV95cUxQY1FwZkllZWpYWEtqVmNCdVRMY1NnbERfRHFWTHpWbkpKYV84OG9DemFqWjBPMkJlVEZ4NnVncFNWcWdWNHdWWF80WHBMbGJjLU5YMVZZSW1uYVJ4Uzl3YUl2eXVNeEhhVUVyUFVJR2ZLOHdfX2N5a2RSQjNncmh0UF96THJfNWxfMkE?oc=5) |
| The Washington Post | Why your smartwatch is so bad at telling you how many calories you burned | 2026-09-21 14:22 | [Source Link](https://news.google.com/rss/articles/CBMivAFBVV95cUxQZmVOVklhVzhuU3h4ZERCeWNSTWlJTW9TYWo5MzVjQnlSVlpUajJkQ240NUVCT2lDVGR5b3BkbzRGSl91enYtMU1PVFJfeHdiUHRXdTRoZFIyWlkxT3JoRUpKdnRBS0pzRDRKeWRtWEY3bXVpazBCajJyelRIV0VTS3c2Ym5Dd2tyM1pMem1kUms1NS0zblNkSk5wOHdnNG10RnlDZFk1cnRZSjVIelRrUU54WXdrdEdzRWZDMQ?oc=5) |

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