The main function of cartilage is to protect bones and joints in the body through several ways. One way is through shock absorption, as cartilage acts like a cushion and absorbs the impact and stress on bones during different movements. Cartilage also helps bones glide smoothly against each other by reducing friction, preventing them from rubbing together. This keeps joints moving smoothly and also minimizes wear and tear. Additionally, cartilage helps maintain the shape of your joints during movement and connects various tissues, like tendons and muscles, to bones.