In this 2008 video, Dr Artour Rakhimov explains how you can find out your body oxygen content using a simple but special breath holding time test. The test is done after usual expiration and only until the first signs of stress or discomfort.
This is the main test of the Buteyko breathing technique. It is also called the Buteyko CP or Control Pause. Over 20 Western medical studies confirmed that people with chronic diseases have low body oxygenation and poor results (less than 20 seconds) for this body oxygen test.
Mouth breathing is one of the common causes of heavy breathing and low O2 content in body cells. Losses in nasal nitric oxide is another common problem due to mouth breathing - http://www.normalbreathing.com/index-nasal.php
Note that you should not have any stress at the end of this easy test and should not gasp for air. If you do, that means you hold your breath for too long time. Generally, if a person repeats this test 3-4 times, he or she can define this border when to stop breath holding.
The common results for this body O2 test changed dramatically during last 100 years. It used to be about 40-50 s for body oxygenation in the past, but currently it is about 20-25 s for normal subjects and less than 20 s for people with symptoms and health problems.
The results of this body O2 test also correlate with breathing frequency at rest or breathing rate - http://www.normalbreathing.com/index-rate.php
. Note that the normal breathing rate is only 10-12 breaths per minute at ress for a 70 kg person. Sick people breathe faster (up to 20 breaths per minute or even more in the severely sick), and this heavy breathing reduces their body O2 and the results of this test.
This test helps to monitor one’s progress in yoga since the key factor that makes yoga successful is slower breathing at rest and more O2 in body cells. For more information on yoga, you can consult this Amazon Kindle book by Dr. Artour Rakhimov "Yoga Benefits Are in Breathing Less" - http://www.amazon.com/Yoga-Benefits-Breathing-Less-ebook/dp/B007MS6CS2/
The video is for people with poor health, and chronic health problems (such as asthma, heart disease, cancer and many others) and health practitioners.
People with chronic diseases have elevated minute ventilation: http://www.e-breathing.com/respiration/minute-ventilation/
and this causes reduced body O2 content.
For more details about breathing retraining methods and great resources on lifestyle for better health, visit NormalBreathing.com