Bicycle mechanics involves the study and maintenance of bicycles, focusing on their various components such as the frame, wheels, brakes, and gears. Understanding how these parts work together is essential for ensuring a bike operates smoothly and safely. Regular maintenance can prevent issues like flat tires or brake failure. Key tasks in bicycle mechanics include adjusting the derailleurs for smooth gear shifting, inflating tires to the correct pressure, and lubricating the chain to reduce wear. Mechanics also diagnose problems, replace worn parts, and perform tune-ups to keep bicycles in optimal condition for riders.