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It seems to me lately that commute time is actually pretty comfortably spent thinking on problems which require 'holding off on proposing solutions' (I don't drive.) I used to misspend it by going over stuff in circles, but now I actually look forward to it and compose lists of things I have to do/buy/wash etc. (also, I spend far less of it belowground, which is still - years after I moved - a palpable relief.) I had tried listening to podcasts, but it made my ears hurt after a while, and simply 'disconnecting' during 'stupid commute' made me disgruntled. Apparently thinking doesn't feel too bad!:)