Exoskeletons are external frameworks that provide support and protection to organisms. In nature, many insects, crustaceans, and some other animals have exoskeletons made of materials like chitin. These structures help them maintain their shape, protect against predators, and prevent water loss. In technology, exoskeletons refer to wearable robotic devices designed to assist or enhance human movement. They are often used in rehabilitation, helping individuals regain mobility after injuries, or in industrial settings to reduce strain on workers. These devices can improve strength and endurance, making tasks easier and safer.