A flat bench refers to a type of exercise bench commonly used in weightlifting and strength training. It's designed with a flat surface, lacking any incline or decline angles like you might find on adjustable benches. Flat benches are versatile and suitable for a wide range of exercises, including bench presses, dumbbell presses, and various core exercises. They provide a stable platform for lifting weights and are a staple in many gyms and home workout setups due to their simplicity and effectiveness.