"Outdoor" refers to activities or environments that take place outside of buildings. This includes natural settings like parks, forests, mountains, and beaches, where people can engage in various recreational activities such as hiking, camping, and picnicking. The outdoor environment is characterized by fresh air, sunlight, and the presence of plants and animals. Many people enjoy spending time outdoors for relaxation and exercise. Outdoor activities can promote physical health and mental well-being. Common outdoor equipment includes tents, backpacks, and bicycles, which enhance the experience of exploring nature and participating in sports like mountain biking or rock climbing.