One! I'd like an injury or disease that would cause chronic back pain and maybe make a formally active person not so active any more. I know herniated disks or sciatica can do that but I think those heal too quickly and completely. The guy with a bad back was pretty strong at time of injury and in his mid 30s.
Two! Given the injury in number one, I'd like the best kind of motorcycle for him to ride.
Thank you very much!