First time comment here; felt compelled after reading some of the comments. Please make sure you all pay attention to your physical state while trying to conce

First time comment here; felt compelled after reading some of the comments. Please make sure you all pay attention to your physical state while trying to concentrate etc (for the people who’ve been seeing dips in performance and/or getting “in zone”). Only yesterday I noticed that I had somehow formed the habit of holding my breath when reading/learning/absorbing anything complex. Seems pretty ridiculous but I went from having a hard time understanding some high mathematics to - when regulating breath appropriately - breezing through.