Muscle Run is a fast-paced runner where every choice makes you stronger—or weaker! Race through colorful tracks, choose the best multiplier gates, collect protein and avoid junk food. Train at gym stations, lift weights, fight rivals and dodge dangerous obstacles. At the finish line, swing your hammer to send the puck up a towering high striker and win rewards. Unlock outfits, customize your hero, upgrade your strength, collect diamonds and conquer 100 challenging levels across five worlds!