Health / Fitness Glossary

Ergonomics: The study of designing apparatus to better fit the body and minimize health risks.

Essential Fatty Acids (EFA): Required by the body, however only obtainable from food sources, such as flaxseed oil and safflower oil.

Exercise: Activity done for the purpose of keeping fit and healthy, or sociable in a group form like football.

Exercise Ball: A large plastic ball that is an excellent tool for doing challenging exercises (with or without weights) that require varying forms of strength and control.

Exercise Intensity: The amount of energy that a person uses during a workout. This is normally measured by the persons heart rate.

Exercise Machine: Exercise machines are a category of exercise equipment that is not moved as a complete unit during the exercise.  Exercise machines commonly (but not always) incorporate a stack of weight pl . . . View Full Definition

Exercises: A set of moviment repetition to achieve physical fitness.

Extension: Body part (i.e. hand, neck, trunk, etc.) going from a bent to a straight position, as in leg extension.

Fartlek: A type of interval training program that doesn't use an exact measure of time or distance. You just do your intervals whenever you feel like it. The term Fartlek means 'speed play' in Swedish.

Fascia: Fibrous connective tissue that covers, supports and separates all muscles and muscle groups. It also unites skin with underlying tissue.

Fast Twitch: Refers to muscle cells that fire quickly and are utilized in anaerobic activities such as sprinting and power lifting.

Fat: Often referred to as lipids, or triglycerides, one of the main food groups, containing nine calories per gram. It serves a variety of functions in the body, however a high percentage of body . . . View Full Definition

Fatigue: A lack of energy caused by excessive strain.

Fibrin: The substance that in combination with blood cells forms a blood clot.

Fitness Walking: A faster and more intense walking technique than casual (lifestyle) walking that burns more calories and helps you lose weight. When you fitness walk, you generally move along at a brisk pac . . . View Full Definition

Flex: Bend or decrease angle of a joint; contract a muscle.

Flexibility: The range of motion or distance you can move a joint through. Stretching is the key to maintaining your flexibility.

Flexion: Bending in contrast to extending, as in leg flexion.

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