We marvel at the durability of Keven Mealamu while wondering about the impact of all that rugby on his frame.
He's a beaut and at 36 is being managed through the season to the World Cup and a probable international swansong this year. All the acclaim about the man and his remarkable career can wait until then.
Colleague Brad Thorn is quitting the game at 40 to take up a coaching role at the Reds which might age him faster than the 460 games of professional rugby he's played. Extraordinary does not do justice to that career.
Meanwhile, Bulls lock Victor Matfield is 38 and steaming towards a fourth global event after being talked out of retirement by Springbok coach Heyneke Meyer.
Now Irish skipper Paul O'Connell, who turns 36 during the World Cup, has revealed that tournament will be his last lap of international rugby before high-tailing it to superannuation rugby at Toulon.