Never hold your breath in the water without proper freediving training.  

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Never force yourself to hold your breath. When you got more skills, your breath holding time increase without forcing.

 

Always do the exercises in a way so the air can flow freely through your nose and mouth. Do not use a diving mask or nose clip during training.  

 

Make sure someone is present if you are doing long breathing exercises.  

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Always avoid over-breathing or hyperventilation during exercise.  

 

If you experience symptoms of hyperventilation, stop exercising and breathe normally for a while. Do less breathing in the future.

 

Symptoms of hyperventilation include:

- Tingling in the limbs

- Semi paralysis of hands

- Dizziness

- Lightheadness

- Numbness around the mouth

- Metallic taste in the mouth