It’s not just because you’re tired—your body has a clever trick up its sleeve! Yawning helps cool down your brain and boost alertness. When you yawn, the muscles in your face and neck get a workout, which may stimulate the carotid artery, revving up your heart rate and triggering the release of hormones that keep you awake and alert. So, the next time you yawn, know that your body is giving itself a little wake-up call! #YawningScience #DidYouKnow
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