Proprioception is your body's ability to not only understand its position in time and space but to also properly control it. It is measurable and also naturally declines overtime. Proprioception is also sometimes referred to balance. RULE#1: 3 entities govern your proprioception. Your brain (cerebellum), your inner ear (vestibular system), and your muscular stabilizers. Your inner ear analyzes the position of your head, while your muscular stabilizers analyzes your joint stab