Have you ever wondered what the label would read if fitness could come in a package?  Here is a possibility:

Fitness Facts
Serving Size:  30-60 minutes*
Number of servings per week:  5-7 days
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Calories burned:**           143-286
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Stress levels:                   reduced
Mood:                               elevated 
Body weight:                   decreased or maintained
Blood pressure:               improved/controlled
Cholesterol:                     improved/controlled
Blood sugar:                    improved/controlled
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Ingredients:  All-natural***
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*The 2008 Physical Activity Guidelines for Americans recommends that adults acquire at least 150 minutes (preferably 300 minutes) per week of moderate-intensity exercise.
**values are per serving and are calculated based on a body weight of 150 pounds and a walking speed of 4.0 miles per hour.
***As part of a diet low in saturated fat and cholesterol, walking at least 30 minutes a day may reduce the risk of heart disease, stroke, diabetes, high blood pressure, some cancers, improve cholesterol levels, and/or help to maintain a healthy body weight.

Note:  Before beginning an exercise program or increasing the intensity level of a current routine, a physician's approval should be obtained, especially for older adults and those at risk for or who currently have chronic health conditions.

Resources:
The 2008 Physical Activity Guidelines for Americans

ACSM's Guidelines for Exercise Testing and Prescription, sixth edition