Yes. Even mainstream medicine is recognizing Yoga’s influence on our health. Conclusive studies performed by Herbert Benson, M.D., at Harvard Medical School, and Jon Kabat-Zinn, M.D., at the University of Massachusetts Medical Center show that yoga and meditation boost immunity and reduce stress, which are underlying factors in many chronically ill patients, including patients with heart disease and cancer. Some HMOs, prestigious hospitals, many corporations now offer yoga classes to their patients and employees, powerful proof that yoga works.