Knowledge Base > FAQ > Activity Specific > Running > Triathlete > Why do I run out of breath when I run, cycle, swim or do some other activity?

in Activity SpecificFAQRunningTriathlete

When your muscles, including the muscles surrounding your lungs, are tired and fatigued you may feel winded or out of breath. Training with PowerLung can strengthen your lung muscles. Trained lung muscles have a higher endurance level and can result in better performance and race time.

When your muscles, including the muscles surrounding your lungs, are tired and fatigued you may feel winded or out of breath. Training with PowerLung can strengthen your lung muscles. Trained lung muscles have a higher endurance level and can result in better performance and race time.

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