A sigh may do more for your health than provide emotional relief. Researchers in California claim to have identified the source of the sigh in the brain, which they say is a life-sustaining reflex for healthy lung functioning. Humans sigh around 12 times per hour to reinflate the half-billion or so tiny, balloon-like sacs in the lungs called alveoli, which are vital in regulating the flow of oxygen and carbon dioxide. A sigh is mostly an involuntary deep breath, or a regular breath with another added on top before an exhale.
.. Continue Reading The wistful sigh is really a survival mechanismCategory: Health & Wellbeing
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