Athletes often describe flow states with:
"My limbs just move on their own."
"Intense, totally absorbing focus."
"My mind is totally blank. I'm not thinking at all, just doing."
I'm very interested homing in on this "thinking" that is often reported absence in flow. It clearly points to something other than "you brain firing on all cylinders doing crazy computations" because that is certainly all happening while playing an intense sport. I figured it would be helpful to compare against flow states in more prototypical "mental" activites.
So with all that context, when you are in peak experience/flow doing anything highly mental (math, coding, chess, etc), what is it like? And what sorts of "thinking" aren't happening, and what sorts of "thinking are happening?