This is a method for attaining spiritual benefits and Divine Love. Spiritual orders use different methods of zikr, the method used in Naqshbandiah Owaisiah Spirtiual order is called Pas Anfas(Guarding each breath). You can read more about this zikr in detail over these links
http://www.owaisiah.com/methodofzikr.htm
This zikr also provides contentment and peace, it also cures stress, insomnia, major depressive disorder and many other mental and emotional problems. any one interested to know more about this zikr should feel free to ask. thank you!