Re: AI Go.
200W seems a bit high, you'd need over 4000 kcal/day to sustain that.
1 MET*, at normal rest, is about 1.16 W/kg: I think you might get to 1.5METs (140W for an 80kg person) by thinking hard but I doubt you could break 2.0 without a lot of fidgeting (be an interesting experiment though!).