I searched for this info on here before I posted this but nothing came up. However, today it shows me related items.

This was posted originally by BBBarbie.

Here’s a video I found that briefly explains the technique -

https://www.youtube.com/watch?v=XRfLTQjJhp0

If you want to explore more then look up Brad Yates on Youtube. He has videos for everything even for pain -

https://youtu.be/xwqxMX03pus?feature=shared

Never heard of it.
What is it?