This video explains how to stretch brachialis, both a flexor and stabiliser of the elbow, and a muscle that is vital to anyone doing gymnastics strength training. As well, if you are a bodybuilder and find that you can't straighten your elbow fully, try this.
In the beginning years of practice, it is common to over-stress this muscle: the body uses this muscle as a major stabiliser of the elbow joint in all straight-arm strength movements, like the planche.
Ringo, one of the teachers at Aerial Fitness Studio in Singapore, asked Kit to help him with this muscle; it had been a problem for him for quite a while.
The video, even though only just under three minutes in duration, shows how a partner can help to stretch this muscle. If it has a small injury, or is chronically tight, you will not be able to straighten the affected elbow properly – and a small degree of hyperextension is absolutely necessary for any handstand work, or any straight-arm supports.
Find the audio file of this video at https://supplementary-material.s3.us-west-2.amazonaws.com/Stretching+Brachialis.mp3.