I too went into surgery at top condition as I maintain that as part of a healthy lifestyle. Unfortunately, my 50 mile a week running program has given me a robust blood supply in my groin and pelvic area so I bled a lot more than the surgeons expected.
While I did not need or get a transfusion, they did keep me in hospital for a full week instead of "overnight" to make sure I had recovered sufficiently before release.
I had been doing kegels forever as I am 64 and things sag as you age.