Effectiveness of Stress Balls in Reducing the Physiological Symptoms of Stress University of Wisconsin-Madison Department of Physiology Lab 603 Group 16 Joel Alvarez, Dani Day, Alyssa Gardner, Imaan Saeed, Courtney Schwebach & Ryan Valk May 7, 2015 Key Words: stress ball, blood pressure, heart rate, GSR, stress, relaxation, skin conductance, stress response