Exoskeletons are external structures that provide support and protection to certain animals, like insects and crabs. Unlike humans, who have internal skeletons, these creatures have hard outer shells that help them maintain their shape and defend against predators. The exoskeleton is made of a material called chitin, which is both strong and lightweight. In recent years, scientists have developed robotic exoskeletons to assist people with mobility issues. These devices can help individuals walk again or lift heavy objects, making daily tasks easier. By mimicking the function of natural exoskeletons, these innovations are changing lives and enhancing human capabilities.