There’s nothing supernatural about your sixth sense: it lets you perceive your body’s position and movement.
Brain Bytes showcase essential facts about neuroscience.
Proske, U., & Gandevia, S. C. (2012). The Proprioceptive Senses: Their Roles in Signaling Body Shape, Body Position and Movement, and Muscle Force. Physiological Reviews, 92(4), 1651-1697. doi:10.1152/physrev.00048.2011
Purves D, Augustine GJ, Fitzpatrick D, et al., editors. Neuroscience. 2nd edition. Sunderland (MA): Sinauer Associates; 2001. Mechanoreceptors Specialized for Proprioception. Available from: https://www.ncbi.nlm.nih.gov/books/NBK10812/