In other words: They look strong, but they move poorly.
Based on common interpretations of those words, here are a few directions you might be interested in: 1. Bodybuilding & Physical Aesthetics overdeveloped amateurs link
Ways to respond constructively
You don't need to be an expert, but do choose one "primary keyword" for your topic. Place it in your title, at least one subheading (H2 or H3), and your first paragraph. In other words: They look strong, but they move poorly