Hey folks - hope you’re all doing well 
I subbed to Cracking the Code about a month ago with the intention of using these techniques to help me play punk down strokes faster and for longer. Think Black Flag or Circle Jerks - constant down strumming three note power chords at up to 220 for a couple minutes.
I’ve been working with the USX for single-note down picking but I’m finding it hard to translate that motion into down strumming. I’m still running into tension in the upper arm in particular.
Does anyone have any wisdom to share? Any insight on how punk players can down strum so fast for entire shows?
Thanks