Relief of a sigh could be related to reduced surface tension of lung fluid, study finds

NEW DELHI: Feeling a sense of relief after a sigh could be related to how lung movements during a deep breath reduce surface tension of the organ’s fluid, making it easier to breathe, a study has found.

Researchers, including those from Switzerland’s ETH Zurich, observed how the lung fluid behaves when it is stretched and compressed through experiments in the laboratory.

Lung movements during inhaling and exhaling subject the lung fluid to similar stresses.

Source: PTI News

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