It also helps to explain why he hasn't done a lot of pre-season training and strained that same groin in the first week of meeting up with his new teammates, although becoming stressed due to a lack of physical conditioning doesn't seem to be Weepu's style.
"I was enjoying my break," Weepu says. "I found it hard, just the motivation of getting back into it again. You train for so long and you're playing for such a long time during the year, some people just like enjoying the break and not do anything and then it takes a while to get back into things. No, I didn't do a lot of fitness."
Weepu's training was restricted to playing touch and sevens, including a tournament he organised in Wainuiomata.
It was a lot more relaxed than the debate around him this week, when a two-second glimpse of Weepu feeding his six-month-old daughter Taylor was removed following concerns from pro-breastfeeding organisations he would sway people away from breastfeeding their children.
Weepu said his baby is allergic to dairy, one of the reasons why she is bottlefed, but also railed against criticism of his parenting.
"They are my kids, I'm not going to have anyone tell me how to raise me kids," he told 3News.
It might help snap Weepu out of his World Cup malaise. He's also set to make his first start in a Blues jersey when he lines up at first five-eighths in a pre-season match against the Rebels in Melbourne tomorrow night.
"It was such a big event," he said of the World Cup. "Once you achieve your goal ... I mean everyone's goal once they start playing fully professionally or become an All Black, one of the biggest achievements is to win a World Cup. For myself, now I've won a World Cup, motivation-wise, while I know it's not the end of my career, I just want to relax and enjoy that whole moment, even though it was four months ago.
"You still think about it. You still have moments when you wish you were still back in that atmosphere because we've never had it anything like it before. It was humbling to see how the nation can get behind their international teams."
If Weepu wasn't used to that support from New Zealand, his standing in Wainuiomata has never been in question. He is an identity there and admitted he found it tough to move on.
It was more about leaving his family rather than a Hurricanes squad that has undergone huge changes since the arrival of coach Mark Hammett last season. Hammett decided he wanted to mould his own team which left several experienced players on the outer, including All Blacks Ma'a Nonu, who has also signed with the Blues, and Andrew Hore, who has gone to the Highlanders. Aaron Cruden also followed his old provincial coach Dave Renie to the Chiefs.
Weepu decided to leave, too, once he surveyed the changes Hammett planned and it wasn't something he came to lightly.
"Having to leave home and being away from my parents ... it's been a long time since I've been away from them. But you've got to make a decision at some time in your life. You know, this is my career. I know that Wainui will always be home for me so I'm here doing my business, my work."
Weepu predict a tough season for the Hurricanes, despite their retention of a few senior players.
"They are rebuilding. They've got to develop their younger players and hopefully they can turn things around. Everyone's sort of doubting them, just because they got rid of a couple of key players last year and guys like myself and a couple of others walked [but it] doesn't mean they don't have potential.
"I'm still close mates with most of those boys. Like people say, it's a business and you've got to try to make do as best you can in the business world. It means that if you're not wanted somewhere and you're wanted somewhere else, then that's an opportunity that you've got to take with both hands and not look back."
It's hard to see Weepu treating rugby purely as a business because the game means more to him than that. Any team he is in becomes a second home and that's important to him.
Weepu has maintained a link to his roots through his new living arrangements, though. He is flatting with friend Luke Laban, the son of Wainuiomata league and rugby institution Ken, in Mt Roskill, and regularly travels to Wellington to see his young daughters Keira and Taylor, both of whom watched him at training in Auckland last week.
As for the City of Sails, Weepu reckons he is fitting in well.
"I used to hate it, but only because it was such a big area. But since I've been here you notice that it's not as big as you think it is. I guess back home, I'm quite cruisy. Everything's close to me so it's quite cruisy for me."
Maybe not too much has changed after all.
