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  "path": "/news/2026-05-voice-youre-exerting-effort-machines.html",
  "publishedAt": "2026-05-14T11:10:01.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "The \"talk test\" is often used as a low-tech way to measure exercise intensity: If you can easily talk or even sing, your workout is fairly light, but if conversation is difficult, you are exercising vigorously.",
  "title": "Your voice changes when you're tired or exerting effort, and machines may soon use that signal"
}