For both goals (back pain and breathing exercises) I'd highly recommend the book "Becoming a Supple Leopard" by Dr. Kelly Starrett. http://www.roguefitness.com/

For both goals (back pain and breathing exercises) I'd highly recommend the book "Becoming a Supple Leopard" by Dr. Kelly Starrett. http://www.roguefitness.com/becoming-a-supple-leopard http://www.roguefitness.com/becoming-a-supple-leopard Kind of an esoteric title, but the book is filled with outstanding information and actually specifically addresses the standard MD diagnosis of inflexible calves and how to really drill down to the root cause. Definitely worth a read. Good luck and congrats on setting self improvement goals!