A pelvic imbalance is a most common condition and easily treated. This is a cause of poor posture, lifting incorrectly, poor daily habits, and weak core cause muscles to become imbalanced and weak. The result of the continued imbalance results in chronic back pain, disc herniations, disc bulging, and/or degenerative joint conditions.
What happens is that the muscles around the pelvis become tight on one side and lengthened on the other, essentially playing tug of war with the bones. This then hikes one leg up; seeming like a leg length discrepancy. Then when you workout in this imbalance, the hiked leg (i.e. shorter leg) takes majority of the load, thus strengthening one side of the body more than the other. So now, we have more of a problem to unfix.... but lets start with the pelvis first - since is the hub.
Here is a series of exercises to get your body moving symmetrical and out of imbalance....
Elbow Curls 1x25
Cross Crawl Pattern 2x10
Supine Adduction Squeezes 2x20
Hip Crossover Stretch - 1x:60
Cat and Dogs 1x10
Alternating Supermans 2x10
Supermans - 2x10 reps (hold 1 sec at top)
3 pos toe raises 3x10