What is a wobble board used for?

A wobble board is primarily used for improving balance and proprioception. Proprioception refers to the body's ability to sense its position and movement in space, which is crucial for maintaining balance during various physical activities. When standing or performing exercises on a wobble board, the unstable surface forces the body to engage stabilizing muscles, enhancing coordination and strength in the lower extremities. This is particularly beneficial for athletes or individuals in rehabilitation programs, as it helps prevent injuries by improving overall stability and awareness of body mechanics.

The other options do not accurately reflect the primary purpose of a wobble board. Mental relaxation, increasing muscle size, and enhancing hydration are not achieved through the use of a wobble board, as its specific design and function focus solely on balance and proprioceptive training.