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"Breathing Exercises." Physio-pedia. Diakses Februari 2026.
"Breathing Exercises for COPD." Verywell Health. Diakses Februari 2026.
"7 Breathing Exercises That Can Help Improve Lung Capacity And Respiratory Health." Doctor NDTV. Diakses Februari 2026.
"7 powerful exercises to strengthen the lungs, and boost breathing capacity." The Times of India. Diakses Februari 2026.