Back pain is major problem after ages in old age people in more than 80 percent pepople . here are some good videos to know the cause , symptoms and treatments , test and tips for the relieving the back pain.
next interesting video
these are the test for the lower back pain
steps to lower back pain
ramadev baba back pain relieve exercises
https://www.youtube.com/watch?v=F4NnLER1EXk
exercise that you should avoid if you have back pain
