Bartendaz, Bodyweight Training Video

Lately, I’ve been looking for programs that will help me increase the number of pullups I can do and came across a group of guys called the Bartendaz on Youtube that I was really impressed with. These guys are insane with these body weight exercises. Now I’m not sure how successful a person training to get in shape would be trying to build your body with bodyweight exercises only, but I bet if you can do a quarter of the stuff these guys can you are in pretty good shape. I really wish I could get a little more background on these guys and what kind of training built them up to this phenomenal condition they seem to be in. Did they train with weights or concentrate purely on bodyweight exercises? I hope you enjoy the video!