WaterBall is a special medicine ball, available in various weights and diameters, containing just enough water to create movement within it.
The effectiveness of this workout lies precisely in the continuous instability it generates: a lunge with an immobile weight will be useful for developing strength alone, while the same exercise performed with WaterBall translates into a high-intensity neuromuscular workout that also affects the proprioception of all muscle and tendon structures.
In fact, the instability of the ball "forces" the body to expend more energy to perform the exercise correctly; the benefits are therefore achieved on multiple levels: increased strength and power, improved balance, posture, and muscle tone, and a reduced risk of injury.
The variable load of the different models also makes them exceptional tools for physiotherapy sessions that need to be carried out gradually over time.