Answer to Question 1
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Answer to Question 2
A study reported that the following characteristic pattern of physiological alterations occurred during regular yoga practice:
1 . An extreme slowing of respiration to 4 to 6 breaths per minute
2 . More than a 70 increase in electrical resistance based on galvanic skin response (GSR), indicating a state of deep relaxation
3 . A predominance of alpha brainwave activity
4 . Slowing of the heart rate to 24 beats per minute from the normal rate of 72 beats per minute
These alterations in physiology indicate deep levels of relaxation, which activates parasympathetic nervous system activity. The parasympathetic nervous system unleashes energy, restores the immune system, and fixes many problems that stem from a chronically activated fight-or-flight response.