Report Abuse. Exercise frequency.. it is how often you exercise.. medical professionals say that you should exercise everyday. Exercise duration... is how long you exercise and medical professionals say that 30 minutes or longer. Exercise intensity is how hard you work out. Dont work to the point where your in pain but work hard enough that you feel your muscles stretch.
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Aerobic exercise (also known as cardio) is physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process.
https://en.wikipedia.org/wiki/Aerobic_exercise
Physical activity is defined by its duration, intensity, and frequency  Duration is the amount of time spent participating in a physical activity session  Intensity is the rate of energy expenditure  Frequency is the number of physical activity sessions during a specific time period (e.g. one week).
http://www.uh.edu/fitness/PPTs/Definitions.pdf
Duration Is a Guide to Selecting Bonds. Bond investors are faced with reinvestment--the threat that if interest rates fall, the interest payments and principal that investors receive will have to be reinvested at lower rates.
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Lifestyle –physical activity typically performed on a routine basis (e.g., walking, climbing stairs, mowing or raking the yard), which is usually light to moderate in intensity. Physical activity play –play activity that requires substantial energy expenditure (e.g., playing tag, jumping rope).
http://www.uh.edu/fitness/PPTs/Definitions.pdf
Play –activity with flexible rules, usually self-selected, for the purpose of having fun. Sports –physical activity that involves competition, scorekeeping, rules, and an outcome that cannot be predetermined. There are two categories of sports: individual and team.
http://www.uh.edu/fitness/PPTs/Definitions.pdf
 Activities that involve the small skeletal muscles (e.g. playing board games, drawing, writing) are important, but they do not provide the health benefits of activities that involve the large skeletal muscles and require substantial energy expenditure.
http://www.uh.edu/fitness/PPTs/Definitions.pdf
Anaerobic exercise is fueled by energy created through glycolysis, which is a method by which glycogen is broken down into glucose, also known as 'sugar,' and is converted into energy. Heavy weight training, sprints and jumping are examples of anaerobic exercises that rely on stored energy in your muscles. The benefits of anaerobic exercise include: 1  Building and maintaining lean muscle mass. 2  Protecting your joints. 3  Boosting metabolism. 4  Increasing bone strength and density. 5  Improving your energy.
http://study.com/academy/lesson/anaerobic-exercise-definition-benefits-examples.html
Anaerobic exercise consists of brief intense bursts of physical activity, such as weightlifting and sprints, where oxygen demand surpasses oxygen supply. While aerobic exercise relies on oxygen, anaerobic exercise is fueled by energy stored in your muscles through a process called glycolysis.
http://study.com/academy/lesson/anaerobic-exercise-definition-benefits-examples.html
Types of Physical Activity Aerobic-light to vigorous-intensity physical activity that requires more oxygen than sedentary behavior and thus promotes cardiovascular fitness and other health benefits (e.g., jumping rope, biking, swimming, running; playing soccer, basketball, or volleyball).
http://www.uh.edu/fitness/PPTs/Definitions.pdf
define duration in exercise
In exercise, duration is a how long you exercise and medical professionals say that 30 minutes or longer.