Having difficulty breathing, typically due to physical exertion. Can also describe being exhausted or winded from activity.
This straightforward phrase has been in use since the 14th century, originally describing the literal state of breathlessness after running or climbing. It comes from the Old English understanding of breath as the essence of life, so being 'out of' it suggested a temporary departure from normal vitality.
What's remarkable is how this purely physical description has remained virtually unchanged for over 600 years, unlike many other bodily expressions that have gained metaphorical meanings. It's one of the most direct and honest phrases in English, immediately understood across all cultures and time periods.
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