Fast breathing pattern is the root cause of anxiety. practice correct breathing patterns. this will cure anxiety 100 percent. Persons with fast breathing rate are in higher energy state. Anxiety,panic attack, nervousness, shivering, memory loss, mental agitation,fatigue, all these are symptoms of higher energy state just slow down your breathing.excess energy will leave you, your anxiety, panic attacks will calm down. practice untill you are totally cured. I suffered this condition for 9 years and came to these conclusion, this is the only solution.