A little bit of a light stretch can make a big impact. The lower part is a sensitive place for many people. While back pain can have many causes, sitting all day with a weak core and poor posture (and then shortening of the hip muscles that then extend into the lower back) are two factors that can really cause lower back pain. Contribute to pain and discomfort in the part. It is always important to find out why the pain occurs so you can address it and prevent it from happening again. But in most situations, doing some gentle yoga poses can help relieve tightness and give your lower back some relief.