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".
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.
COVID-19 UPDATE
74,855,994
cases
42,277,369
recovered
1,659,941
deaths
What will happen in New Zealand?
New Zealand's cases are primarily due to overseas travel, meaning the
increase in cases seen here is still due to how many people are arriving with Covid-19,
not how it is spreading in New Zealand.
Click on the labels on the chart above to compare and you will see more
locations.
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.