Tires â Retreading is less expensive than new tires and is a large portion of this cost. Although mere pennies per mile, an average tire can cost over $250 and annual tire expenses can exceed $4,000 ($0.03 per mile), enough to purchase 16 new tires annually, but still not enough to replace every tire of an 18-wheeler.
To Correct Forward Head Posture, the muscles which need to be stretched comprise of: 1  Upper cervical (capital) extensors: Semispinalis capitis, splenius capitis, longissimus capitis and suboccipital muscles. 2  Lower cervical flexors. Sternocleidomastoid muscle, medial and anterior scalene muscles.
Rotation describes the action of moving the head from side to side, lateral motion brings the ear to the shoulder, flexion moves the chin to the chest (as in looking down), and hyperextension moves the neck so that the head tilts upward.he muscles of the neck run from the base of the skull to the upper back and work together to bend the head and assist in breathing.