Playing fast has a lot to do with fast and relaxed mental processes. So this thread is about training your/my brain to think fast and stay relaxed. This exercise just came to me about a week ago and I've never heard of it before so I'm asking the community what they think about it. The exercise is simple, I like to use YouTube audiobook novels and prerecorded news. Simply speed up the narration by using YouTube's speed adjuster (press the 3 vertical dots in the upper right corner of your screen to access the variable speed). 1.25 speed is reasonable, pretty easy. 1.50 gets harder and I can navigate it pretty well, 1.75 is really hard and is a speed I'll have to woodshed on, so that's my goal. Question, if I can navigate the fast syllables and phrasing to a place where I can hear it all and be relaxed, could that transfer to relaxed playing at higher speed on the guitar?