Sportal.co.nz 06.Mar.2013Getty Images
The No.13 revealed to Perform Media that he loses between 1.5 and 2 kilograms after every Investec Super Rugby match as a result of heavy sweating.
"It's always been like that for me, because I sweat heaps as well. In general I seem to lose a bit of weight when I'm running and stuff," said Nanai-Williams.
The diminutive centre cut an odd figure at the conclusion of the Chiefs' 45-3 demolition of the Cheetahs at Waikato Stadium last Saturday.
Armed with two chicken drumsticks, Nanai-Williams said the protein gained from the chicken helped offset the amount of weight he would lose in a game.
Sacrificing as much as two kilograms was something the midfielder was happy to do in order to help his side notch wins.
His influence was evident in the 42-point hiding dished out by the Waikato franchise last Saturday.
"When you're playing in a Super Rugby team, everything's always intense.
"Especially when you've come off a big year last year winning the championship, everyone has high expectations of us, so we're trying to keep it up.
"The boys are doing what they can every day to make sure we recover and to make sure we eat well too."
As for his own position in the side, Nanai-Williams admitted he was still learning the ropes of his shift to the midfield.
With three games and a pre-season match against the Hurricanes under his belt, Nanai-Williams said the midfield combination of first five-eighths Aaron Cruden, second five-eighths Bundee Aki and himself was a work in progress.
"I think there's a lot of traffic coming in the middle, so you sorta have to read players and see who you've got.
"When you're at fullback you can pretty much roam and do all that, but on the frontline it's all about structure and making sure you've got the right person."
Nanai-Williams and the Chiefs will have an opportunity to improve that midfield combination further when they're tested on the highveldt against the Stormers on Saturday (local time).