Kidney stones or stones in the ureter (the tube that connects the kidney to the bladder) can cause pain in the lower back. This pain may also radiate to the groin and is often accompanied by painful or frequent urination. An infection in the kidney can also cause back pain and frequent urination.

“Red flags” include pain that lasts more than 6 weeks; pain in persons younger than 18 years or older than 50 years; pain that radiates below the knee; a history of major trauma; constitutional symptoms; atypical pain (eg, that which occurs at night or that is unrelenting); the presence of a severe or rapidly ...

Stationary biking may be preferable. Others find swimming to be a positive activity, or water therapy (which is exercise in a pool). Joining a gym and working with a therapist or trainer is often an effective way to learn some good stretching and core strengthening exercises.