I’ve finished the Gymnastics Bodies Fundamentals course. I highly recommend it.
I’m currently working on the first Foundations class, but I don’t like it as much as the Fundamentals approach and therefore cannot recommend it.
“Daily Stretch”:
The Secrets of Gymnastic Strength Training. The Tim Ferris Show. 2016-05-09. An interview with Coach Christopher Sommer.
The Secrets of Gymnastic Strength Training, Part Two — Home Equipment, Weighted Stretches, and Muscle-Ups. The Tim Ferris Show. 2016-08-17. Another interview with Coach Christopher Sommer.
Building the Gymnastic Body. Christopher Sommer. 2008-09.