There are some exercises that need no equipment at all and some just need cheap weights, but what I love about this "training-philosophy" is the intensity AND that you train useable strength, other than these "testosterone and growth hormone" doped body building monsters, who get out of breath if they need to carry two bags of grocery in the fifth floor.
I tried to convert these strategies to my regular gym training back then and got some strange looks, sweating and screaming, but the results spoke for themselfs.