http://www.ehow.com/guide_4-http://www.ehow.com/guide_4-sports.html.htmlwww.ehow.comhttp://www.ehow.com/how_2312914_do-alternate-nostril-breathing-exercise.htmlIn an alternate nostril breathing exercise you breathe in through one nostril, hold your breath, and breathe out through the other nostril. Published on 6/3/2008