Rectus abdominis - the muscle extending the entire length of the abdomen, from the lower 3 ribs to the top of the pubic bone (below the navel). Works to keep you upright and lets you bend at the waist. Strengthening this muscle can help prevent lower back pain

Essential fatty acids - fatty acids that must be present in the diet to maintain health

Strain - an injury to muscles or tendons.

Exercise - almost any activity requiring physical movement such as walking, running, lifting weights, gardening, etc. A critical part of the healthy lifestyle needed to lose and maintain weight

Aerobic exercise - An activity where you breath harder but don't gasp or feel breathless. Literally, "with oxygen."

Rhomboids - the muscles that pull your shoulder blades inward. They attach to the vertebrae at the base of the neck and go diagonally to the inside edges of the shoulder blades

Trapezius or "traps" - the triangular muscles stretching across your back from the spine to the shoulder blades and collarbone. Its used to "shrug" your shoulders

BMR (basal metabolic rate) - the rate of energy used for metabolism when the body is at complete rest - closely related to the muscle mass. Usually measured by the amount of oxygen consumed. Acknowledged by experts to be difficult to measure accurately

Diabetes Type 1 (insulin dependent diabetes) - occurs when the pancreas does not produce insulin at all leading to elevated blood glucose

Fad diets - fashionable or trendy diets that may or may not actually help in reducing weight. These diets should be used with caution and a professional medical opinion sought. See our take on fad diets for more details

Intervals - speed workouts, usually run on a track, with distances and target paces decided before you run. They typically consist of relatively short sprints of 220 yards to 1 mile interspersed with rest periods of slower running

Isometrics - a system of exercise in which opposing muscles are contracted. There is little movement even though both muscle sets are exerting force

Kilometer - A metric measurement commonly used in athletic distances. Abbreviated Km or K. 1K equals 0.62 miles. Inversely, 1 mile equals 1.62 kilometers. 5K is 3.1 miles, while 10K (this is higher math) is 6.2 miles.

Kinesiology - the study of the principles of mechanics and anatomy in relation to human movement

Trapezius or "traps" - the triangular muscles stretching across your back from the spine to the shoulder blades and collarbone. Its used to "shrug" your shoulders