A Strange Machine

The body is a strange machine With lots of moving parts And once we’re born, like products purchased, All the action starts. The heart pumps blood, the lungs expand And brain cells do abound. The muscles grow, the eyes and ears Take note of what’s around. As years go by, from overuse Or injuries we’ve faced, The cogs and gears inside break down And sometimes they’re replaced. We plug along, though, even when We’re aching and we’re tired, For as we age, we also know Our warranty’s expired.