The trapezius muscle runs from the base of the head to the shoulders. Because of its location and role in moving the neck and shoulders, the trapezius muscle is prone to inflammation caused by overuse and injury from repetitive stress.

Where on your body you tend to gain the most weight, whether it's around the middle or more on the hips and thighs, is the result of your genes and particular physiology. However, the more weight you gain, the more you're going to see it in your face, regardless of whether the rest of you is an apple or pear shape.

Five hundred is a lot of pushups, enough that even elite athletes would consider it a brag-worthy accomplishment. Exactly what you gain from it, and what risks go along with those benefits, is more complex than the simple, macho sense of achievement you would get from the practice.

Aches and pains, especially in the back, are something that many people deal with on a daily basis. The idea of working out completely pain-free is a bit of a fantasy -- there always seems to be a sore muscle somewhere. Performing pushups with back pain is OK as long as you're not suffering from a serious back injury.

Temporomandibular joint disorder involves pain and stiffness in the joint where the jawbone meets the skull. One of the common symptoms is a popping or clicking sensation when opening or closing the jaw.

Nasolabial folds are those unsightly “parentheses” signs that form as you age and run from the sides of your nose to the area around the corners of your mouth. These folds are often one of the first signs of aging that appear on your face, according to Dr. Yael Halaas.

Pull-up chin bars are an inexpensive piece of home workout equipment. When you're installing one, you need to take two factors into account if you want to install it at the correct height. The bar needs to be low enough that you don't bump your head at the top of your repetitions.

Several staple free weight exercises -- like the chest press, pec fly, French press and pullovers -- are meant to be done while lying on a weight bench.

Wearing a swimsuit or low cut shirt can make you feel self-consciousness if you have saggy breasts. Several factors, including pregnancy, contribute to saggy breasts -- the ligaments that support your breasts become stretched as your breasts grow during pregnancy, reports the MSN Living website. Aging is also a factor.

Every time you scowl, squint, glare, glower or grimace, you contract the underlying muscles around your eyebrows and forehead. At the same time, your skin becomes thinner and drier and loses its elasticity with age.

Many creams are marketed as a way to treat double chins. These creams are applied to the neck and chin area, and purportedly tighten the skin to hide the double chin. Keep in mind that none of the effects touted by manufacturers of double chin creams have been validated by the Food and Drug Administration.

Inclined pullups, also called Australian pullups or inverted rows, are an excellent upper-body exercise: they work multiple muscle groups and simulate the sort of real-world movement you might make any time you pull yourself up or pull something down or across toward you.