| Abdominals |
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Group of muscles in the front of the torso between the chest and pelvis.
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| Abductor |
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Hip muscle used to pull your legs apart.
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| AC |
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Alternating Current: Power source where voltage changes magnitude and direction. Gym-quality equipment often uses AC instead of DC.
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| Adductor |
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Muscles in the inner thigh used to pull your legs together.
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| Aerobic |
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Long-term exercise that uses oxygen, carbohydrates, and fat for energy. Means "with oxygen."
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| Air Resistance |
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Type of exercise bike that requires a user to pedal against air produced by a fan.
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| Anaerobic |
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Short-term, high-intensity exercise that uses carbohydrates for energy. Means "without oxygen."
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| Barbell |
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Weights attached to a long bar.
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| Belt |
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Moving track portion of a treadmill where a person runs, walks, or jogs.
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| Bench |
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Long seat or platform.
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| Bicep |
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Muscle running along the inside of the upper arm.
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| Body Fat |
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Percentage of body mass that's not composed of muscle, water, bones, or organs.
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| Body Mass Index |
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Body weight to height ratio.
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| Burnout |
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Boredom with exercise.
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| Calorie |
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Amount of heat it takes to raise the temperature of one kilogram of water by one degree Celsius.
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| Cardiovascular Equipment |
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Exercise equipment designed to raise a person's heart rate with aerobic activity.
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| Computer-Controlled Resistance |
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Friction-free resistance adjustment on an exercise bike.
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| Continuous Duty Horsepower |
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Maximum horsepower equipment can sustain over a long period of time.
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| Crossbar |
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Bar that a person can hold for support or balance while exercising.
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| Cross-Training |
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Training method that uses a variety of exercises to work different muscle groups.
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| Current-Limiting |
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Feature that prevents too much electrical current from running through equipment.
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| Cylinder-Driven Resistance |
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Cylinders use air or hydraulic fluid to provide resistance. You can adjust resistance by turning a knob..
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| DC |
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Direct Current: Power source where electricity flows in one direction.
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| Declined bench |
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Simple bench set up at a declined angle.
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| Dehydration |
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Depletion of body fluids.
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| Deltoid |
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Three-part muscle group around the top of the shoulders.
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| Dependent Steps |
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Linked steps on a stepper or stair machine. When you step on one step, the other moves.
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| Dietary Supplement |
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Pill or food that completes a person's daily nutritional requirements.
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| Direct Tension |
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Method of adjusting resistance by manually turning a knob or adjusting a lever.
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| Drive Train |
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Mechanical system that transfers power or torque from one place to another.
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| Dual Action |
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Type of exercise bike that has movable arms.
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| Dumbbell |
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Weight attached to a short bar that can be lifted with one hand.
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| Electrolytes |
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Type of television that uses lenses and mirrors to magnify an image and project it onto the back of a translucent screen.
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| Elliptical Machine |
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Cardiovascular exercise machine where users stand upright and create a gliding motion that mimics stepping, walking, and skiing.
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| Ergo Handlebar |
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Handlebars shaped and positioned for comfort.
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| Ergonomic |
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Designed to comfortably fit the human body.
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| Exercise Ball |
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Inflatable ball that can support the weight of a body, often used to improve balance.
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| Exercise Intensity |
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How hard a body works during physical activity.
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| Exercise Mat |
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Mat made of a thin material that stays in one place on a floor without permanently attaching itself.
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| Flexibility |
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Range of motion around a joint.
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| Flywheel |
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Wheel that stores energy and helps control speed in some fitness equipment.
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| Footprint |
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Amount of floor space a piece of exercise equipment takes up.
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| Free Weights |
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Weights such as dumbbells and barbells that are not attached or tethered to a machine.
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| Glutes |
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Three-part muscle group around the buttocks and hips.
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| Hamstring |
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Group of three muscles on the back of the thigh.
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| Heart Rate |
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Number of times a heart beats in a certain period of time.
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| Heart Rate Monitor |
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Device that measures heart rate.
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| High-Impact |
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Actions that put a lot of force or strain on your body.
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| Home Gym |
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Exercise equipment that can have one or more station containing a seat or bench. A station can have resistance bands, a cable and pulley system used with a weight stack, or parallel bars.
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| Horsepower |
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Term coined by James Watt to describe power provided by a horse. Horsepower is measured at 33,000 foot-pounds of work per minute.
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| Inclined bench |
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Simple bench set up at an inclined angle.
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| Independent Steps |
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Steps on a stepper or stair machine that are not attached to each other. When a person puts weight on one step the other step does not move.
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| Intermittent Duty Horsepower |
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Maximum horsepower a machine can sustain over a short period of time.
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| Interval Training |
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Workout where a person alternates between short periods of high-impact and low-impact exercise.
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| Inversion Machine |
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Equipment that supports a person and allows them to move as they hang upside down or at an inverted angle.
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| Isometrics |
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Exercises that work opposing muscle groups to increase tone without shortening the muscles.
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| Low-Impact |
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Exercise that does not put a lot of force or strain on your body.
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| Microfiber |
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Lightweight and breathable cloth made of polyester or nylon used in a lot of sports clothing.
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| Motor |
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Device that turns electrical energy into mechanical energy.
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| mph |
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Miles per Hour: Measurement of speed that indicates the distance a person can travel over the course of one hour.
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| Pacer |
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Equipment setting that allows you to set distance and time goals so that you can pace yourself or race against the clock.
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| Parallel Bar Dips |
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Equipment with two parallel bars that allow you to raise and lower yourself to work your chest and triceps.
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| Peak Performance Horsepower |
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Maximum available horsepower.
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| Pedometer |
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Device that calculates how many steps a person takes.
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| Pilates |
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Exercise system developed by Joseph Pilates that uses controlled movement to improve muscle tone, flexibility, strength, and range of motion.
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| Preacher Curl bench |
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Type of bench that has a raised arm support so you can work lower bicep muscles with free weights.
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| Quadriceps |
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Group of four muscles in the front of the thigh.
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| Recovery Heart Rate |
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Amount of time it takes for your heart rate to return to where it was before you began a workout.
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| Recumbent Bike |
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Type of exercise bike with a chair-like reclined seat.
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| Resistance |
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Opposing force.
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| Resistance Band |
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Band with elasticity that creates resistance when stretched or pulled.
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| Resting Heart Rate |
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Number of times the heart beats while a person is at rest.
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| Rower |
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Exercise equipment where a user rows as if on a boat.
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| Safety Clip |
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Key attached to an exerciser's clothing and equipment. When it is pulled, the equipment stops to prevent injury to the exerciser.
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| Self-Powered Alternator |
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Feature that powers cardiovascular equipment without plugging into an external power source.
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| Shock Absorber |
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Material designed to absorb or cushion impact.
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| Ski Machine |
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Cardiovascular exercise machine that lets a user recreate a skiing motion.
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| Spinning |
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Exercise class where people are instructed to use a stationary bike in a way that mimics outdoor cycling conditions.
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| Split-Level Console |
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Display used on some exercise equipment that has one area to adjust settings and a separate area to track progress during a workout.
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| Stair Climber |
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Exercise equipment that allows a user to step in a climbing motion.
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| Stepper |
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Exercise equipment that allows a user to step in a walking motion or in a lateral motion.
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| Strength Training |
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Exercises designed to increase muscle, build strength, and maintain bone mass.
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| Target Heart Rate |
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Optimum heart rate for aerobic fitness determined by the American College of Sports Medicine.
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| Torque |
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Amount of twist required to set a piece of equipment into motion.
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| Total Body Workout |
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Exercise routine that works all of the body's major muscle groups at once.
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| Trampoline |
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Nylon web supported by springs on a metal frame.
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| Treadmill |
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Exercise equipment that requires a person to walk, jog, or run on a moving belt.
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| Triceps |
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Muscles on the back of the upper arms.
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| Warm-Up |
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Slow exercise at the beginning of a workout that raises your body temperature and prepare your heart and muscles for activity.
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| Watt |
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Measurement of the power output for a piece of equipment.
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| Weight-Bearing Exercise |
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Exercise where you support or lift weight, such as running.
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| Weight Lifting Belt |
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Belt that provides lower-back support.
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| Weight Plate |
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The actual weight at the end of a barbell, dumbbell, or in a stack on a home gym.
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| Yoga |
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Type of exercise that uses breathing, stretching, and strength-building poses to improve flexibility and strength, and promote relaxation.
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