I've had back surgery three times and knee surgery once. I currently have a small amount of arthritus in my back and a degenerative disc. Pain is an every day thing for me. A strong headwind a long hill or pushing myself can cause some aditional pain. I had to give up running six years ago and basketball was left behind ten years ago, but giving up biking is not an option. I don't like pills but I love my ice pack. Currently I ride about 180 miles per week if the weather permits.