Medical
Several researchers have reported that pranayama techniques are beneficial in treating a range of
stress related
disorders,
[39] improving autonomic functions,
[40] relieving symptoms of asthma,
[41][42] and reducing signs of
oxidative stress.
[43][44] Various scientific studies have also revealed the benefits of pranayama for reducing free radical damage; improving lung function and quality of life in chronic illness; and helping cancer patients deal with pain
[45]. Practitioners report that the practice of pranayama develops a steady mind, strong will-power, and sound judgement,
[33] and also claim that sustained pranayama practice extends life and enhances perception.
[46]
Cautions
Many yoga teachers recommend that pranayama techniques be practiced with care, and that advanced pranayama techniques should be practiced under the guidance of a teacher.