"He's 32 years and super fit at the moment. He's played every minute of every game," said Rodgers.
"We've worked very hard on his individual plan to make him as fit as he possibly can be, and the rest has been down to him really.
"It's about his responsibility on the field, how he manages himself off it. He's been first class, and as a captain he's been brilliant this year."
When asked about a new contract for the Reds skipper, the boss added:
"He's 32, 33 in May, and I still see another three to five years left in him yet as long as everything holds up with his body, which this year has been nigh-on perfect, so that is something we will sort out in due course."
"As I've said, he's had a fantastic season this season up until now and he wants to finish it strongly.
"His priority is always Liverpool, which is real humbleness from the guy. He is more worried about the football club than himself.
"I, as a manager, want to make sure he stays here because he's very, very important for what I want to do."
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