Warren said it was an opportunity to set new routine, "especially early on in the piece – getting up at certain times, having a good wholesome breakfast, scheduling in breaks and then getting some sun on you".
He said people should aim to be buying whole foods - including "lots and lots of fresh fruits and vegetables".
NeedToKnow3
Warren said the lockdown gave people time to try new recipes.
Auckland University professor Shaun Hendy, who co-authored a research paper suggesting up to 80,000 Kiwis could die without strict measures, emphasised the key role the lockdown plays in reducing the spread of coronavirus.
He told Newstalk ZB the lockdown gave the country a "really good chance" of stamping coronavirus out.
Hendy said the large suggested figure wasn't alarmist – but instead a realistic worst-case scenario.
He said by acting now, coronavirus' spread would be slowed and officials would have enough time to catch up with finding close contacts and conducting tests.