Having a think is not a conscious activity?

that, yes, sorry.

I meant walking, chewing gum, dribbling a basketball, and avoiding traffic.

Mh, balance that ball on your finger while keeping it in spin or dribble it between your legs while spinning your body around and see how many conscious decisions you make while not stepping into canine feces.

Depends on expertise. Consider a toddler learning to walk, while eating a snack, carrying a toy and avoiding the cat.

Driving stick is a good example, as shifting gears requires conscious thought at first and becomes mostly automated with experience.