Walking for fitness and fun walking is for everyone walking is a popular form of exercise, and it is growing more popular each year. walking is good for every age group: the rate of participation does not decline in the middle and later years. in a national survey, the highest percentage of regular walkers for any group was among men 65 years of age and older. walking: the slow and sure way to fitness people walk for many reasons: for exercise, for enjoyment, for solitude, or simply for transportation. no matter the reason, though, people who are walking are getting great exercise. when walkers maintain a good brisk pace and walk on a regular basis, there are definite health advantages. some of these include lowered resting heart rate, gradual weight loss, and reduced blood pressure. briskly walking one mile in fifteen minutes burns as many calories as jogging the same distance in eight and one-half minutes. walking: convenient and inexpensive walking is an easy exercise regimen. you can do it almost anytime. you can do it almost anywhere. there is no special equipment needed. and it does not cost anything. no matter what your age or condition, walking can make you healthier and happier. use the selection to answer the question. each paragraph in the selection describes a. causes and effects. b. problems and solutions. c. a timeline of events. d. a main idea and details.