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Fun things to try with breathing:

- When lightly exercising, close eyes and focus on breathing. Note effects on heart rate.

- Get into an uncomfortable (but safe) position such as a deep squat, crab position, etc. Close eyes and focus on breathing. Note effects on feelings of discomfort, and effort to maintain the position.

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Safety note for folks with uncontrolled hypertension: before squatting even just your body weight, read up on the Valsalva maneuver.

when I'm completely relaxed after a breathing workout, I sometimes dont "feel" the need of breathing, for long periods, is that normal?

If by breathing workout you mean Wim Hof style hyperventilation, then yes. Hyperventilation causes hypocapnia, which reduces air hunger.

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