I'd been interested in seeing how many people participate in systematic self-improvement efforts outside the LW/CFAR space. Some examples in rough increasing order of weirdness: diet, fitness, psychiastric help, life coaching etc., social skills programs of various kinds, nootropics. This covers a lot of ground and there's probably some options I haven't thought of, but these two questions would be a good start:

• Do you follow a limited or unusual diet for health (not ethical) reasons?

(this would probably need "I tried and it didn't work" and "I tried but found it too hard" options. We'd probably also want some way of distinguishing between "I'm allergic to onions" and "I kind of try not to eat red meat" and "I'm full-blown hardcore paleo".)

• How many hours a week do you spend exercising, on average?