When an assessment is made, information will be gathered regarding which muscles are in a lengthened position and which are in a shortened position. Generally, the muscles that are slightly shortened tend to be stronger, and those that are slightly elongated tend to be weaker than the muscles that work in opposition to them. The effect of muscle imbalances on the joints can manifest as loss of flexibility and decreased range of motion. If not corrected with joint mobilization, muscle lengthening and strengthening techniques, this ‘muscular tug-of-war’ can result in a permanent loss of motion. When applied to the human skeleton, these muscular conditions create faulty alignment that may give rise to stretch weakness or adaptive shortening of the muscles. These imbalances in muscles give rise to faulty postures with names such as sway back, flat back, hyperlordosis, and several others. When we discuss posture, we are evaluating the condition of the entire musculoskeletal system.