A stress ball, also known as a stress ball or stress reliever , is a small object that can be squeezed, squashed, or kneaded to reduce tension and stress. Squeezing a stress ball can help reduce muscle tension, improve blood circulation, and aid in relaxation. It can also help with concentration and reduce negative thoughts that often come up during stressful situations. Stress relievers are popular in workplaces, schools, and other situations where people experience stress and tension.