I once thought myself quite adept at walking. Two feet, alternating steps, arms swinging for balance. It seemed the perfect exercise, a system I had mastered. Then age crept in, my chronic illness worsened, and I quickly learned that walking is far more complicated than my toddler self ever imagined. Wah!

For instance, not long ago, I was strolling along, admiring the trees like a nature documentary narrator. Sadly, I failed to notice the road ahead was no longer flat. My ankle twisted one way, my body the other. Down I went, while my dog looked on with what I can only describe as mild disappointment and perhaps a hint of amusement in her eyes.

Another time, I got so distracted watching our dog, Tess, chase a squirrel that I walked straight into a low-hanging branch, nearly knocking myself senseless.

And sometimes, there's simply no excuse.