I love this post, because yes, coming back from distraction is key. And, well, having to pee is literally a writing distraction. It's important to stay hydrated while sitting at a desk, but drinking water like a good girl also means knowing you should get up, now, but denying the urge for far too long because you're in a zone and really don't want to leave that paragraph (because what if you completely break your groove!), but OMG YOU HAVE TO GO. (This just happened, by the way. It's how I know it's true.)