Subjects in this group will receive only Sub Occipital Muscle Inhibition Technique and heating pad for 10 minutes.

Subjects in this group will receive Sub Occipital Inhibition and Hold Relax Agonist Contraction of hamstrings.

The therapist sits at the head end of the table, palms beneath the subject's head, pads of his fingertips on the posterior arch of the atlas, which will be palpated by the therapist between the external occipital protuberance and the spinous process of the axis vertebra. The therapist locates the gap between the occipital condyles and the spinous phase of the C2 vertebra with the middle and ring fingers of both hands the therapist then rests the base of the skull on his or her hands, with toward the therapist. The pressure will be held at the same level for four minutes until tissue relaxation will be achieved. The subject will be asked to keep his eyes closed during the SMI technique to prevent eye movements disturbing the Sub occipital muscle tone.

The NPRS is an 11-point numerical scale used to measure average pain experience over 7 days, and ranges from 0 (no pain) to 11 (worst imaginable pain). NPRS is considered a valid and reliable scale for measures of pain intensity.

For popliteal angle and cervical range of motion bubble inclinometer will be used in this study.

In the Active knee extension test, the subjects knee will be extended with the subject will lying in the supine position and the hip joint flexed to 90°. This test has good validity and reliability (0.75)

Urdu version of neck disability index will be used in this study.It consists of ten items related to pain intensity, headache, concentration and different physical activities (lifting, personal care, recreation, work, driving, reading and sleeping) with six possible responses per item. The score of each item ranges from 0 to 5. The highest total possible score is 50, and this score is converted to a percentage. Higher scores represent higher levels of disability. The NDI has been shown to be a valid and reliable questionnaire for patients with neck pain.

Craniovertebral angle will be measured by using a camera and Image J analysis software. For this purpose, patient will sit on a stool or chair in comfortable position, hands should be relaxed on thighs and feet on floor. A camera will set at I meter distance from patient and perpendicular to the height of patient's shoulder. The measuring evaluator attached two body markers, one on the tragus of ear and the other on the seventh spinous process. Patients will be asked to fix their gaze on a mark on the wall directly in front of them. Once the photograph was obtained, the CVA was used to measure the angle between a line extending from the tragus of the ear to C7 and the horizontal line passing through the C7 spinous process.