The six-session yoga practice is a way of helping us to fulfill our commitments from anuttarayoga tantra initiation, by reminding us of the vows that we’ve taken and also the nineteen closely bonding practices to make a close connection with the five Buddha-families, which deal with the various aspects of Buddha-nature. We need to remember that tantric practices are complex and entering the world of tantra is like entering a labyrinth, therefore we need a teacher to give us the basic guidelines so we don’t become lost.