As of midnight Wednesday, beauty services are closed, but hairdressers will still be able to operate.

Personal training can go ahead, but with no more than 10 people, outdoors, and observing physical distancing rules.

You'd be forgiven for being confused by the Federal Government's second stage of restrictions.

Let's unpack them with five quick questions.

What will still be open?

Supermarkets (including convenience stores)

Supermarkets (including convenience stores) Pharmacies

Pharmacies Banks

Banks Petrol stations

Petrol stations Freight and logistics

Freight and logistics Food delivery

Food delivery Bottle shops

Shopping centres will remain open, although physical-distancing rules still apply. That means there needs to be at least 4 square metres available for every person in the area.

In real terms, you should still be trying to keep 1.5 metres away from people at all times, and avoiding any handshakes or physical contact with people outside your family.

Retail premises will need to display a sign saying how many people can be in the store at one time.

So if you're thinking about ducking down to a shopping centre, consider whether it is essential.

"People should stay at home unless they're going for essential services and shopping, unless they're going for medical services or to work or for exercise or children to school," Federal Health Minister Greg Hunt said.

"We are asking them not to congregate in groups either outside or inside the house."

As for whether food markets can go ahead — such as your local farmers' market — Prime Minister Scott Morrison said that would be up to each state and territory.

Mr Morrison said they were important in ensuring food supply across the country.

"States and territories have very different arrangements in terms of the types of markets they have and they'll be making those decisions specific to their states and territories."

What's been strictly limited?

Hairdressers and barbers can continue but customers must limit their visits to 30 minutes, and as the Prime Minister says, "preferably less".

"It is very important that they strictly manage the social distancing and limitations of the number of people in their premises, so that's 4 square metres per person," he said.

"And on top of that, to restrict the amount of time a patron is in the premises to no more than 30 minutes."

Visits to the salon or barber can be no longer than 30 minutes. ( Pixabay )

Personal training and boot camps will be limited to a maximum of 10 people, but sessions must be held outdoors and those attending must maintain physical distance.

Weddings can continue, but no more than five people can attend — so only the couple, the celebrant and the witnesses.

Funerals are limited to a maximum of 10 people, and those present must (again) maintain physical distance.

The Prime Minister said he understood this would be difficult, but weddings and funerals had been identified as "some of the major transmitting events".

Visiting others at their home, or having visitors in your home, should be kept to a minimum.

If you are having people over, there should only be a very small number of guests.

So there should be no barbecues, parties and big dinners with friends or extended families.

Mr Morrison said he understood this would be a "significant sacrifice" for many people.

"Gathering together in that way, even around the large family table in the family home when all the siblings get together and bring the kids, these are not things we can do now," he said.

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What's closed?

Beauty therapy, tanning, waxing, nail salons and tattoo parlours

Beauty therapy, tanning, waxing, nail salons and tattoo parlours Spas and massage parlours — this doesn't include health-related services such as physiotherapy and allied-health services.

Spas and massage parlours — this doesn't include health-related services such as physiotherapy and allied-health services. Real estate auctions and open house inspections

Real estate auctions and open house inspections Amusement parks and arcades

Amusement parks and arcades Indoor and outdoor play centres

Indoor and outdoor play centres Gyms, health clubs, fitness centres, yoga, barre, spin facilities, saunas, wellness centres and community and recreation centres

Gyms, health clubs, fitness centres, yoga, barre, spin facilities, saunas, wellness centres and community and recreation centres Public swimming pools

Public swimming pools Galleries, museums, national institutions, historic sites, libraries, community centres

Galleries, museums, national institutions, historic sites, libraries, community centres Auction houses

Auction houses Cinemas

Cinemas Nightclubs

Nightclubs Casinos, gaming or gambling venues

Casinos, gaming or gambling venues Outdoor and indoor markets — this doesn't include food markets

Outdoor and indoor markets — this doesn't include food markets Places of worship

Food outlets in shopping centres can stay open, but they will only be able to sell takeaway.

So you won't be able to sit in a food court and eat your meal.

Why are some numbers different?

Under the new measures, 10 people can attend a funeral and 10 people can attend an outdoor bootcamp. So why are weddings limited to only five people?

Here was the PM's answer:

"I don't think it's that complicated to understand that only the direct participants in a wedding, in an enclosed venue, would be a necessary restriction.

"I think people can follow that quite plainly."

Mr Morrison said the Government's decision to allow 10 people at an outdoor bootcamp was about protecting people's livelihoods.

"I'm not going to be cavalier about people's jobs and their businesses, where possible," he said.

"The National Cabinet is going to continue to keep Australia functioning in a way that continues to support jobs and activity in our economy, which is not going to compromise the health advice that we're receiving."

What restrictions might come next?

The stage two restrictions will come into effect at midnight tonight.

What comes after that, we don't know for sure.

Stage three of restrictions may see retail stores closed, but the Prime Minister said he hoped that would not be necessary.

"If we do all the things that [Chief Medical Officer Brendan] Murphy has outlined, and these other, quite strict, measures we've put in place about other areas of social gathering … we believe that will have a really significant impact, we would hope, on the spread of the virus," Mr Morrison said.

The Federal Government sat down with state and territory leaders again on Wednesday for another National Cabinet meeting.