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#breathing cycle #exhale inhale #breath sequence #sigh inhale #respiration cycle #mouth breathing

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#inhale exhale #breathing cycle #respiration cycle #air flow #breath exercise

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#respiration cycle #breathe #physiological breathing

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#inhale exhale #breath cycle #breathing pattern #in out #respiration cycle

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#inhale exhale #breathing rhythm #respiration cycle #steady breath #breath wave

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#respiration cycle #breath exchange #wdech #wydech

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#lungs #gas transport #respiration cycle #blood oxygenation #CO2 transport