Proprioceptors are specialized sensory receptors located in muscles, tendons, and joints. They provide the brain with information about body position, movement, and muscle tension. This feedback helps maintain balance and coordination during physical activities. These receptors play a crucial role in the nervous system by allowing individuals to sense their body's orientation without relying on vision. Proprioceptors enable activities such as walking, running, and playing sports by helping the body adjust movements in real-time, ensuring smooth and efficient motion.