Jazel,
I think at different times we all suffer from anxiety. I know I can feel overwhelmed and need an outlet to manage my anxiety. Yoga, especially Kundalini, really has good breathing techniques. The commitment and unfamilarity of being in a non-busy state of being can cause increased anxiety at times. Being alone with yourself in a state of meditation creates change from the inside. It would be an interesting study to complete a study on the effect of Yoga and GAD.
Jill