I could tell you I walk to lose weight, keep my blood pressure in check, and reduce stress, but I'd be lying. I do it for the scenery, and by "scenery" I don't mean the guys who run bare-chested.
One day I might spot a turtle sunning on a fallen tree limb, and the next I'll see a blue heron. Or a possum. Or an owl.
The water's a constant. So is the path and my inherent laziness. After I've clocked the first quarter-mile, though, the going gets easier. Somewhere around the one-mile mark, my head clears and worries disappear. The next mile puts me in the zone, the zen moment, the delicious present.
I've tried mall-walking and walking in my neighborhood but failed at both because they lacked the extra something that prompts me to put on shoes and head out the door: the ever moving, ever-changing bayou.
If you've had trouble sticking to a fitness resolution, consider taking it to a place that's easy on the eyes. The work-out won't be easier, but the scenery will distract you from your aching muscles or the work you've left behind. If you're lucky, it will raise your spirits.