Installing Muscles. Please Wait. Strength doesn’t happen overnight — it’s built rep by rep. The Installing Muscles Tee from the Rebels at the Gym collection is made for those who show up, put in the work, and let progress speak for itself. Featuring a bold loading graphic and clean typography, this tee perfectly captures the mindset of every rebel under the bar — patient, focused, and constantly upgrading. Crafted from premium 180 GSM cotton, it delivers the perfect balance of comfort, durability, and breathability for both workouts and everyday wear. Whether you're grinding through your last set or walking out of the gym knowing you did the work, this tee keeps your mindset loud while your attitude stays quiet. Because real strength installs slowly.