Bryan takes a slightly different approach here, with some new poses or slightly changed poses which will hit your body in some new ways.  I was impressed by the innovations Bryan introduces while still remaining true to the core practice of yoga.  I love the original 3-tape series, and this tape provides a nice, challenging change of pace.  If you are a fan of the first three Kest videos, you might be surprised how a little change can stimulate new growth all over again!  And most importantly, it's still Yoga and it still leaves you feeling great.