What exactly does yoga do?

how does it help to prevent or treat illness?

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Answer:
Yoga increases your oxygen through breathing exercises, which helps your body heal faster. The stretching and exercise is good for you as all exercise is, and the inner peace is good for reducing stress. It is a great way to stay in shape and stay healthy.

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Answer:
Yoga is a mental excercise as well as a physical excercise.

The best technique for any person contemplating to take up yoga isn’t to contemplate but to concentrate - on how yoga and its techniques is escalating into a world wide epidemic where yoga exercises are helping ailing patients and others who seek peace of mind.

http://www.yoga-store.net/best-technique…

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Answer:
Red Blood Cells carry Oxygen to all parts of the body with the help of Haemoglobin, but sometimes due to a shortage of oxygen and an increase in carbon dioxide content, our bodily functions are inhibited, so aches pains and insomnia including constipation and cancer are the resultants of such a flawed circulation . yoga in essence tries to correct this imbalance which is thought to be the prime cause of major Diseases

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Answer:
It woks as a body cleansing. It cleans your body through its Breathing techniques. It educates you to eat properly and healthily. It keeps your body flexible and stronger, through the practice of yogic poses It gives you that mind/body harmony and peace.

And much more. You can discover more, from this free yoga e-course:

http://www.yoga-health-beauty-energy.com…

Ideal

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Answer:
YOGA generally tones up the body and improves body resistance..

Its not a magic. It can not cure a disease which has already come up.

Pranayam, of course, helps even in existing Diseases as it improves oxygen supply to all parts of the body.