The human head weighs 10 to 12 lb., a weight that places a lot of strain on the neck muscles to hold it in place. Moving your head forward out of proper alignment to look at a computer screen or to better see a book adds an additional 30 lb. of pull on the neck.

Your cervical spine represents the seven vertebrae that are located just below your skull leading down to the upper back. A disk bulge in the cervical region can result when the gel-like material that is inside your disk begins to seep out of or “bulge” from your spinal column.

Your motivation to exercise can be negatively affected if sweating or working out make your face burn. There are a number of common causes of facial hotness, redness or burning during exercise and sweating, and each may have a different solution.

Pain in the neck and left shoulder during exercise can be debilitating, stopping you in your tracks and preventing you from continuing your workout. It can also linger long after your exercise routine, making even simple motions such as lifting or turning your head painful.

Pushups are a highly effective body-weight exercise that can be done three to five times per week. They develop strength, endurance, lean muscle mass and clear muscle definition in the upper body and abdominal area.

Cervical dizziness, also known as cervical vertigo, is usually cased by neck or head injury such as whiplash, or compression of the arteries in your neck. The most common symptoms are dizziness when you move your neck and ear pain.

The trapezius muscle is the large triangle-shaped muscle that originates at the base of the neck, extends across to the shoulder blades and connects to the lower thoracic vertebrae in the middle of the back.

If you've built your biceps to a respectable size, your forearms should have some size of their own so your arms look balanced. Besides, strong biceps aren't much good unless the rest of your arm muscles -- forearms included -- are strong enough to assist and support them while lifting, pushing and pulling.

The faces of young people tend to be round and full, but as you grow older, muscle tone will likely diminish, and jowls and eyelids may droop. Illness or weight loss can also cause a face to become more gaunt. A cosmetic surgeon can inject "fillers"

Just about every pullup engages your lats. Unlike chinups, which exert biceps more, pullups primarily target lats. Other muscles such as your triceps, shoulders and core play supporting roles. For a lat workout, try standard, wide, narrow or sternum pullups.

Push-ups are one of the most popular body weight exercises, and are commonly used in a variety of sport and fitness training programs. Push-up form is adaptable to all skill levels, so you can implement an effective training program whether you are a soccer mom or a Navy SEAL.

Headaches after or during a session of pushups are so common, it may surprise you. That's the bad news. The good news is that any problem as common as that generally has a solution. In the case of pushup-induced headaches, the best solution depends on what's causing the problem.