Breathing and Heartbeats

There's a variety  of breathing techniques and I like to resume them into three different types for this particular training.

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My breathing concepts to differentiate my methods are:

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Relaxation breathing: nose breathing, using diaphragm only (25-50% capacity)

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Normal breathing: nose inhale, mouth exhale: diaphragm and chest, relaxed breathing (50-75% capacity)

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Freedive breathing: mouth breathing with nose-clip, full breathing (75-100% capacity)

 

Practice this inhale order: diaphragm, low ribs, chest, mouth.

Reverse for exhale.

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I use a combination of timings:

Inhale 2sec / 4sec / 6sec / 8sec / 10sec

Hold 2 sec / 4sec

Exhale 10sec / 8sec / 6sec / 4sec / 2sec

Hold 2 sec / 4sec

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Heartbeats and body breathing

 

When the urge for air is big, after an explosive effort (fast heartbeat with low O2 / high CO2), I do slow inhales with a fast exhales. This helps and teaches you how to control the urge for air when your body need it the most.

As the heartbeats reduces, I gradually adapt my breathing to fast inhales and slow exhales, reversing the method. Only then I progress to a normal breathing condition for my recovery period.

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After a long breath hold (slow heartbeat with low O2 / high CO2), to avoid over-oxygenating problems (I want to make sure that I'm far from blackouts) I quick exhale and inhale small amounts of air, inhaling about half of what I exhale, for at least 3 times. Only then I fully inhale and exhale completely, following then the above method.