Bike repair involves maintaining and fixing bicycles to ensure they operate safely and efficiently. Common repairs include fixing flat tires, adjusting brakes, and tuning gears. Basic tools like wrenches, tire levers, and pumps are essential for these tasks. Regular maintenance, such as cleaning the chain and checking tire pressure, can prevent more significant issues. Many bike shops offer repair services, while some cyclists choose to learn DIY techniques. Resources like repair manuals and online tutorials can help individuals gain the skills needed for effective bike repair.