The human body uses energy from food to fuel movement and essential body functions, but the body cells don’t get energy directly from food.

Working in unison, the joints, bones and skeletal muscles of the body comprise your musculoskeletal system. The primary function of these components working together is to create movement. Other functions include stability, posture and protection.

Factors that affect equilibrium and balance in the body include breathing, vision, vestibular function, musculoskeletal alignment and proprioception. The eyes, vestibular system and proprioceptors of the neck read and adjust head placement in relation to the environment.

Weight Watchers is a weight-loss program that has been around since the 1960s. The program offers tools, motivation and education to help participants in making the right decisions about food and exercise.

A flat back is known as posterior pelvic tilt. This is a postural deficiency that causes poor posture and improper alignment of the pelvic that could lead to problems. Corrective exercises that extend the lower back backward and strengthen the hip flexors improve the condition of a flat back.

If you're an average American, you drink around 45 gallons of soda and other sugary drinks every year, according to Kick the Can. Fast-food restaurants, sit-down restaurants, vending machines and so many other places all around are bursting at the seams with soda.

The bladder is part of the urinary system and has the role of storing urine until you are ready to eliminate it. A properly working urinary system and bladder can hold up to two cups of urine for five hours, notes the National Kidney and Urologic Diseases Information Clearinghouse.

The human body is composed of thousands of different types of cells that carry out a wide range of specialized functions and work together to maintain optimal health and physical function.

There are 206 bones and approximately 500 muscles in the human body. Most of these are skeletal muscles, which attach from one bone to another bone. One end of the muscle, the origin, attaches to a more stationary bone, while the other end, the insertion, attaches to a more movable bone.

Clean teeth and a healthy smile are a great formula for self-confidence. But if unsightly calcium deposits on your teeth have you hiding your smile, it doesn't have to be a permanent condition.

Ear congestion is typically more of an annoyance than a serious condition, resulting in difficulty hearing and ear pressure. It usually disappears on its own without treatment or can be managed with over-the-counter medications. However, if your symptoms persist or are severe, you may need to see your doctor.

Muscle cells serve a remarkable variety of functions in your body, many of them occurring involuntarily. The specialized structure of the 3 types of muscle cells in the human body enables their functional purposes.