At neck-depth immersion, a person bears approximately what percentage of their body weight?

At neck-depth immersion in water, a person typically bears about 10% of their body weight. This phenomenon occurs due to the buoyant force that water exerts on the body, which counteracts the force of gravity. When an individual is submerged to their neck, the water displaces a significant portion of their body weight, allowing them to experience a much lighter weight sensation than when they are on land.

This aspect of buoyancy is particularly beneficial for individuals with arthritis or other musculoskeletal conditions, as it reduces the stress on joints while still allowing for movement and exercise. By being able to perform activities with only 10% of their body weight, participants can safely engage in exercises that may otherwise be too painful or difficult on land.