For me, it tends to happen more when I'm fully rested. My body feels like a well oiled machine, and my emotions seem fairly muted. It's a state of just "doing",

For me, it tends to happen more when I'm fully rested. My body feels like a well oiled machine, and my emotions seem fairly muted. It's a state of just "doing", with a sense of peace (neither especially happy, nor sad). Replicating it tends to involve just getting on with the task at hand, without too much thinking about the end goal.