|Hip Flexor stretch|
The iliopsoas muscle (or hip flexor) can be prone to shortening especially for office workers who spend a lot of time sitting where the muscle is in its shortened position.
This stretch when done correctly is good for preventing that pose where the back is arched and the butt is out.
The shortened psoas muscle can also cause lower back pain due to the fact that there is less hip joint movement and this slack is taken up in the lower lumbar region.
The pelvis MUST remain square to isolate the correct muscles.