, it is important to note that these types of exercises are not for people who have either herniated or degenerative discs. Certain kinds of yoga strongly aim at being flexible and immensely stretch the spine which in all possibility can be undermining to persons with degenerative spinal changes or who have stress fractures. Furthermore, not all yoga poses relieve back pain, and some can in fact aggravate existing pain, so it is important to know which poses will be most helpful in relieving back pain. It is best to do these exercises under the supervision of a certified yoga instructor, and if you encounter any problems with these poses, you should consult your Arizona pain specialist.