I love how simple and fun this craft looks. If you have kids, they can even help or do it by themselves, depending on their age. These cool spheres can be used for many things, but I love the idea of using them as stress balls. We've all seen the soft, squishy balls marketed as stress relievers and thought, "Do these things actually work?" Sure, they're fun, but is there any science behind the idea? It turns out there is, and it has to do with how the body responds to stress. One theory states that stress causes large muscle groups to contract, ready for either fight or flight. Squeezing a ball lets these muscles relax, which reduces tension. Combined with breathing techniques, this method can effectively relieve stress.