If the laziest person in the country asked me what he should do to increase his spirit and liveliness of mind and body, I would tell him to take up bushwalking, or more specifically trail walking because these activities and laziness make the perfect match. Regardless of how far you walk from the car or bus stop, you have to walk back no matter how lazy you feel. If you are halfway between huts, you have to continue on regardless of any sudden attacks of laziness. I would offer the same advice to anyone who had lost their sense of purpose because unlikely as it might seem, you always feel that you are engaged in doing something useful when you go bush/trail walking even though it has no direct benefit to anyone or anything other than yourself.
Further proof of the match between bush/trail walking and laziness is the short walking day of most walkers adopt – 6 to 6½ hours and huts on any trails I can think of are only a few short hours walk apart. I often like walking days to be long particularly if walking solo as it removes the need to provide evening entertainment because you feel weary at day's end and just want to go to 'bed' once eating is over. I like days like that because I am a lazy person and such days tell me that laziness can be defeated.
Obviously walking isn’t necessarily about long days but if walking was working, a typical day's walk would not be an honest day's work! If walking was working, many walkers would be facing the sack. Plenty of lazy people apparently have made the connection with walking because the only people I see on trails, apart from those coming in the opposite direction and at campsite or huts, are people sitting down!