A few weeks ago, I went on a relatively short and easy hike in the woods, a trail I had been on before. It led to a beautiful watering hole where a stream became a waterfall, ultimately flowing into a large pool for swimming before continuing onward. The trail was quite wide and did not have many obstructions to deal with; it was also relatively flat.

Along I plodded, anxious to reach the water to cool off as it was an exceptionally hot and muggy day. Halfway there and my feet and back were already tiring. By the time I reached all the action, which was only a mile in, my feet had moved past tiring to aching.