Bas Rutten is a machine. He has great cardio. However by looking at his workout video's I noticed one thing. It's the simple stuff which can work wonders. The simple stuff alone which can get someone into great shape. What's on Bas DVD's ? Padwork mixed in with shadowboxing. He does sets of sprawls and pushups inbetween. Nothing new. Nothing out of the box. What delivers results is his intensity. Just hard work and pushing your limits with the basics. No need for any equipment. I mean, heck, you can do that stuff at home on the days you can't make it to formal training. The basics + hard work = You get into fight shape.