I first heard of the usefulness of sternum pull-ups towards improving muscle-up performance from my colleague Milko Georgiev, Bulgaria’s top conditioning coach. Here is a video I shot a few years back of him doing 9 muscle-ups with great form.
Prior to that, I had read an article by Charles Poliquin mentioning this exercise. Poliquin himself was inspired by the great Vince Gironda if I recall correctly. However I never found a comprehensive guide on doing the sternum pull-up, much less on using it to work towards muscle-ups. So this article is a first in a series that will help you do your first muscle-up.
Above you can watch a video I shot demonstrating the basic sternum pull-up. Again, the three keys to the move are using your back, exploding and pulling the elbows back once the upper arms reach parallel.