I can speak from some experience on this one. Throughout my early childhood and up until my freshman year of high school; I was highly active. I played softball, baseball, basketball, and soccer in my off time. I also ran track in middle school, participated in cheerleading for 3 years, and exercised daily. So, I went from playing all of those sports, walking at least a 5 miles a day, and doing: 100 push-ups, 200 sit-ups, 500 jump-in-jacks a day; to doing nothing more than my schoolwork. After a year or so of not exercising, I started having trouble with my asthma. I've also been diagnosed with arthritis and with plantar fascilitis. I have to get back into the swing of things before all of this gets worse. I'm only 19 years old and have several conditions that usually only affect the joints and muscles of middle-aged men and women. I realize now that I shouldn't have taken the best of my youth for granted. Now I have to start all over and only pray that I can get back to the lifestyle that I had before my academic years took over all of my time.