Hi Frank! I'm a huge fan of your work since 2013. It's great to see that you're still inspiring people to progress in calisthenics. Hope you stay flexible, strong, and healthy for decades to come!
I've never seen anything like this. In particular the height of that ribcage lift... no idea that those deep muscles could be activated to perform like this. I'm heading straight to the anatomy (illustrations) to get a clearer impression of what is tucked away beneath those obvious muscles that we all know and love.
