Solved by a verified expert:Instructions:From a public health standpoint, why is there so much attention paid to increasing a sedentary person’s physical activity by a small amount rather than suggesting strenuous exercise?2. How do elderly people respond to exercise training compared to younger adults?3. What is the effect of exercise on appetite and body composition?4. What is the role of environmental factors, such as altitude and heat, in very long distance performances of one to four hours duration?Your paper must be fluid in writing, scientifically sound and APA format. This paper should be a minimum of 5 pages in length and well cited throughout the document. Please provide examples throughout the paper to indicate understanding and application of the content