"I was in Taupo last week and someone asked me what was the longest time I'd spent out of rugby with injury. I said it was only a week; I've never been out of rugby for longer. I've been lucky, I guess, I have never broken a bone or anything.
"Then, three days later, I'm out for four to six weeks. It's frustrating because it gives someone else an opportunity, but it's up to me to come back fitter and stronger and get out there and win my place back.
"I did pop my AC on the All Black end-of-year tour last year against England but that was just a knock and I was just out for that week."
Ironically, Retallick got his original All Black chance when fellow lock Luke Romano was injured - and has never looked back. Last year, he was named New Zealand's player of the year and won the IRB's World Rugby Player of the Year award.
His remarkable "engine" powers one of the highest work rates in the game. His high-octane style and physical clearing out of opposition players at the breakdown make it surprising he has never before been seriously injured in a tight forward career that began in school, where he was so big his teammates had trouble lifting him in the lineouts.
Retallick also welcomed the association with ASB, saying: "I think the environment of the All Blacks is a lot like business. We have a board of directors, executives, coaches, players and a whole army of support people. Everyone knows what their job is - and we all work to a common goal. You can see why sponsors want to be close to that.
"We learn from them too. Sponsors have got a lot better at making their promotions more enjoyable - and I think everyone, not just the players, gets more out of that."