This post is a follow up to my original 5/3/1 post. While the original detailed my personal progress with the program, today I’m going to highlight the progress of a group at CrossFit 626 utilizing Wendler’s approach to strength gains. Building on my personal experience and refining the supplemental movements performed to support each of the main lifts has yielded some fantastic results.... 
Calluses are patches of tough skin that form on our hands in response to repeated friction. The source of this friction is usually high volume barbell, kettlebell or pull-up work. Now everyone’s skin differs in response to these sources of friction, but most people that have done substantial work with kettlebells, etc. know what calluses look like and how painful they can be when they tear.... 
In the initial post in this series I showed you the three pull up bars I’ve built previously. Today I’d like to review the materials used to construct these bars. As I eluded to in the first post, the materials list is surprisingly simple. The two building blocks needed to construct almost any pull-up rig you can imagine are:
aluminum piping
hollaender speed-rail... 