@mbi I am so glad to read your great report! I am impressed that you were discharged so quickly! Yes, I think those who are more fit recover quicker - core and sit-ups help as you pointed out, I discovered that going to the gym and walking paid off. I remember the fatigue you describe which may be more from the anesthesia, on day four I noted (I kept a small journal) that it was the first day the desire to nap disappeared. I was discharged on day 5, at home a week after surgery. Like you, I was no spring chicken at almost 76, but here we see age is just a number. Wishing you a continuing great recovery and I hope walking becomes a permanent activity for you.