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.
Watch lateral flexion here : Look straight ahead and then bring your chin down toward your chest. This is neck flexion, and the anterior scalene acts in it. The other muscles involved include the sternocleidomastoid (itâs in everything!), longus capitis, and longus colli.If you look straight ahead, then turn your head to the side, this is contralateral head rotation.atch lateral flexion here : Look straight ahead and then bring your chin down toward your chest. This is neck flexion, and the anterior scalene acts in it. The other muscles involved include the sternocleidomastoid (itâs in everything!), longus capitis, and longus colli.