"All that extra work he had to put in before the start of the season actually made him a little fatigued, so initially he wasn't selected, first of all because he was having to do all the extra work and, secondly, he was in a pretty fatigued state at that time. But all that hard work he's put in, and all that education and work he's done with nutrition, has really paid dividends now."
Hurrell was relegated to New South Wales Cup duty for the first two rounds of the season before working his way back into form off the interchange bench. He's since scored six tries in 11 outings.
The 22-year-old is pleased with his form.
"It's been good but I still need to make improvements," he said. "It shows on the field. We talk about preparation and stuff like that going into a game and I just need to work on that. I need to improve every day and it's one thing I'm working hard on. If I train hard here, then I play harder on the field and that's what I've been doing."
The bad news for the Warriors' opponents is Hurrell still has some way to go before he reaches his full potential. He goes into Sunday's match against the Panthers at Mt Smart Stadium sitting on 49 first-grade appearances and Jennings is adamant the best is to come.
"He's not going to hit his maximum strength levels until he's between 28 and 32 so, if we continue with our strength programme, he's going to be a rugby league athlete with world-class strength."