"why SUPaddling?"

ideal medium to challenge, train and adapt, with the intention to increase proficiency, with regards to "proprioception (/ˌproʊprioʊˈsɛpʃən, -priə-/[1][2] PROH-pree-o-SEP-shən), from Latin proprius, meaning "one's own", "individual", and capio, capere, to take or grasp, is the sense of the relative position of one's own parts of the body and strength of effort being employed in movement.[3]

In humans, it is provided by proprioceptors in skeletal striated muscles (muscle spindles) and tendons (Golgi tendon organ) and the fibrous membrane in joint capsules. It is distinguished from exteroception, by which one perceives the outside world, and interoception, by which one perceives pain, hunger, etc., and the movement of internal organs.

The brain integrates information from proprioception and from the vestibular system into its overall sense of body position, movement, and acceleration.

Basis of proprioceptive sense, the initiation of proprioception, as the activation of a proprioreceptor in the periphery."