A strong gym logo is all about bold, decisive shape. Use thick, block letters or sharp, angled strokes that look like a flexed bicep. Keep the color palette minimal—black, white, or a single metallic hue—to avoid distraction and keep focus on the power of the design. Make sure every element feels grounded; a slight bevel or drop shadow can add depth, but don’t overdo it. Consistency matters, so the same weight of lines and same tone of color must carry through every use. If the logo feels like it’s holding its own in the light, it’ll amplify that muscle‑building vibe you’re after.