Studies have demonstrated that singing in a choir can have a range of social, emotional, and psychological benefits. Turns out singing has some biological effects, as well. No surprise, people impacted by cancer often experience stress, anxiety, and depression—all of which can negatively impact immune system function. A study was designed to evaluate the impact of singing on mood, stress, and immune response in three population groups diagnosed with cancer. Researchers discovered that just one hour of singing was associated with significant reductions in negative affect, increases in positive affect, and significant increases in cytokines. They believe this provides preliminary evidence that singing improves mood state and modulates components of the immune system. Start singing!