I have participated in part of a Kundalini Yoga Teachers Training Course. Kundalini Yoga focuses on much more than just postures or asanas. It includes mantras, mudras, chakras and lots of pranayama or powerful breathing practices. It is quite challenging and requires a person to be willing surrender to a higher power within themselves in order to keep going. Then one contacts that deep I AM Presence that in truth is doing it all anyway.
Sat Nam, Sat means truth, nam is an acknowledgement to that truth. When we chant Sat Nam we are chanting to uncover the truth of our being.
After working in a hospital as a chaplain, I found I needed to move to a more yin type of practice.