This Kundalini exercise presented by Russell Brand combines breathing, mantra, and mudra for projection from the heart.  The mantra is a gateway to the universal energy. 

Here is the mantra for your reference:

Ad Guray Nameh (I bow to the primal wisdom)
Jugad Guray Nameh (I bow to the wisdom through the ages)
Sat Guray Nameh (I bow to the true wisdom)
Siri Guru Devay Nameh (I bow to the great unseen wisdom)

Try this exercise for a few minutes and see how you feel!