A hand gripper is a compact device with spring or hydraulic resistance that strengthens the fingers, hands, and forearms through repeated squeezing. Grip strength is essential for deadlifts, pull-ups, and many daily activities. Training with a gripper can also improve hand endurance for sports like climbing and grappling. Adjustable models allow progressive resistance as strength increases. The gripper is small enough to use while watching TV or sitting at a desk. It is an affordable and convenient tool for improving forearm size, wrist stability, and overall grip performance.