This wonderful breathing exercise helps increase the breath capacity over time and is a powerful tool for supporting asana practice with deeper breath, and meditation with concentration.  The technique counts the length of the breath, gradually increasing the count of the exhalation before matching the inhale to the longer count.  After repeating the technique twice, David picks up the guitar and invites you to use your new-found technique in singing a mantra:  Aad Guray Nameh / Jugat Guray Nameh / Sad Guray Nameh / Siri Guru Dev Nameh.