This is a good topic. Cycling and exercise in general has just about changed everything in my life. In 2000 I weighed 218 lbs and knew I had to do something. I couldn't even get up off the floor when I played with my two little boys. I started walking and watching what I eat. Pretty soon I was running, then my 43 year old knees couldn't hack it. I took up cycling two years ago. Lost 80 lbs. Now I ride centuries at an average of 16 mph. My career took off because my self confidence had increased so much. I literally doubled my income. I'm teaching the rest of my family how important exercise and nutrition are. My mother and one of my sisters have gotten with the program and had their own successes. I wish I could bottle up how good I feel about this and sell it.