It is Dry July, and time to ditch the liquor for a good cause.
The online fundraising initiative raises money for those with cancer.
Matt Claridge, executive Director of the Cheers campaign, says you can drink sparkling water and still have fun.
"Just be mindful and conscious of what you're doing, and enjoy the little game that plays out with other people when they find out you're not drinking," he told Newshub.
Mr Claridge encourages parents to look at their drinking behaviour because they are role models in the household.
"A prompt to just take a look at how much you're drinking and how often is a really good thing. I'd strongly encourage parents to consider looking at how much they're drinking if they're the big role model in the home for the children."
- Opinion: The problem with Veganuary, meat-free Mondays and Dry July
- Kiwi comedian Dai Henwood on why he's giving up booze
Nearly 5000 Kiwis have signed up this year, raising more than $180,000 so far.
Mr Claridge says the campaign can have a positive effect on those taking part.
"They may find that they find some other lifestyle factors that influence their wellbeing."
This year's funds will go to Look Good Feel Better, a charity which provides free, community-based programmes for cancer sufferers.