In literature, the term “muscular” is employed both as a descriptor of literal physical strength and as a metaphor for vigor and vitality. It characterizes robust, weather-hardened physiques—as in the portrayal of a strong, resilient man in one narrative [1]—and is equally used to describe detailed anatomical structures, from the large, uncompressed gizzards in zoological observations [2] to the intricate layers of tissue in scientific treatises [3, 4]. At times, the word extends beyond biology to evoke notions of energetic exertion and even creative force, where authors link bodily activity to mental and emotional expression [5, 6]. Moreover, in adventure narratives, a character’s “muscular” build often reinforces heroic or rugged qualities, while in technical discussions it underscores precise mechanisms of contraction and coordination [7, 8].