Current research suggests that a carefully adapted set of yoga poses may reduce low-back pain and improve function. Other studies also suggest that practicing yoga (as well as other forms of regular exercise) might improve quality of life; reduce stress; lower heart rate and blood pressure; help relieve anxiety, depression, and insomnia; and improve overall physical fitness, strength, and flexibility.
References:
1. Kiecolt-Glaser JK, Christian L, Preston H, et al. Stress, inflammation, and yoga practice. Psychosomatic Medicine. 2010;72(2):113–121.
2. Lipton L. Using yoga to treat disease: an evidence-based review. JAAPA. 2008;21(2):34–36, 38, 41.