With lock Brad Thorn, with whom Crockett played at the Crusaders, in yet another comeback at the ripe old age of 41 (Thorn recently played for Queensland Country), Crockett has the perfect role model.
"It's pretty inspiring what he's done," Crockett told Radio Sport as he prepared for his team's test against Argentina in Buenos Aires on Sunday. "I don't know if I'll make it to 41, but I think it just shows that if you look after yourself, continue to train hard, and your mind is still willing to push yourself ... then age is a barrier but it's not going to stop you from doing what you want to do.
"Comparing the way we prepared when I first started, to what we do now - the lengths we go to recover now, it's just such a huge improvement. I think genuinely that's going to increase the lifespan of rugby player in terms of their careers; especially in New Zealand, I think we do it as well as anyone."
One of the toughest times in Crockett's career came against Italy in Milan in 2009 when he was penalised off the park for his allegedly illegal scrummaging by referee Stu Dickinson, who was later censured by referees' boss Paddy O'Brien.
Crockett didn't play again for the All Blacks until 2011, missed selection for the World Cup, but, now that Tony Woodcock has retired the Cantabrian is in a weekly tussle for the No1 jersey with Crusaders teammate Joe Moody.