My father retired at age 59-on a reduced DB plan. His job was stressful, his health was poor. He came back from medical leave, worked a week, and then decided it was time. He had also learned that the average lifespan of an pensioner in his company (railway) was something like 67.4 years. I am convinced that he would not have survived until his normal retirement age of 65 had he continued on the job and with the same lifestyle.
They sold up, moved to Vancouver (beside a golf course), occasionally worked a small part time job for a friend. His health improved overnight as did his golf-which they did 3 days a week. He drew a pension for the next 30 years, enjoyed good heath and a great lifestyle. After he passed away, my mother continued to get that pension for another 3 years.
Oddly enough, I was retired at the same age and ready for it finanically and otherwise. I just hope that I can enjoy the same great lifestyle for the same length of time