A curved manual treadmill operates without a motor; the user drives the belt by walking or running on a curved surface. This self-powered design engages the posterior chain more actively than motorized treadmills and encourages a natural stride. It is ideal for sprint training, sled-push simulations, and high-intensity interval workouts, while also saving electricity. The curved shape allows for a smooth transition from walking to sprinting. It is popular in performance training centers and home gyms because it builds lower-body power, cardiovascular fitness, and running-specific strength without needing a power outlet.