Actually, I love Bryan's workouts too...although in recent years he seems to have gotten a little kinder/gentler in a way I'm not always sure I like, now that I can kick it for an hour and 45 with Travis. But his older audio practices (which I have on CD) are challenging, for sure, and I've done a couple of the ones on his site that I also liked. Will be doing more soon, once I figure out how to get internet into my office.