In response to your other questions...
Surgery in general takins it's toll on your body, but many surgeons alter their practice when they get older. The do more clinic and more consulting, or they do shorter/ less invasive procedures and take less call in order to make life more manageable .
Day in the life:
Yesterday I woke up at 4:10, I was on the wards seeing inpatients by 5:00. I wrote around 15 progress notes, then rounded with our fellow at 6:15. We had conference at 7-8 (and had some coffee). Made incision on our first case at 8:30, got out of the OR at 6pm after our last case (my service had 2 rooms and we did 6 cases: two primary TKAs, a revision hip, a periacetabular osteotomy, a primary hip, and a unicompartmental knee arthroplasty. Did postoperative rounds and orders, home at 7. This is an average day if you are not on call. Of course some days are shorter, some longer.