Stress Balls

Balls are objects habitually passed down in games. They are routinely spherical but can be ovoid. In most games using balls, the entertainment of the gallant follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for simpler activities, such as catch, marbles and juggling. Balls made from hard-wearing metal are nearly new in engineering applications Stress Balls to provide frictionless bearings, known as ball bearings.

The title stress was first used by the endocrinologist Hans Selye in the 1930s to identify physiological responses in laboratory animals
He later broadened and popularized the apprehension to include the perceptions and responses of humans trying to adapt to the challenges of everyday life
Stress, in Selye's terminology, refers to the reaction of the organism, and stressor to the perceived threat.