Australia

Both make you feel alert and can enhance your performance, whether that's driving, working or studying.

But some people are convinced that drinking a coffee before a nap gives you an extra zap of energy when you wake up.

How could that be? Is there any evidence to back the power of these so-called coffee naps?

Or are we better off getting a good night's sleep?

Feeling sleepy?

Debbie has now blown out over the Tasman Sea after bringing a deluge of rain down the eastern coast from its impact point in Queensland.

Flood alerts remain, crops have been submerged and the bill may run into hundreds of millions of dollars.

A third body was found in Queensland on Saturday afternoon.

Seventy-seven-year-old Nelson Raebel died in the floodwaters in Logan, south of Brisbane.

Several people remain missing.

Flood records have broken in the town and there are a significant number of people needing flood rescue in the area.

The State Emergency Service (SES) has managed to get rescue planes in the air, but winds of between 50 and 90 kilometres per hour may be hindering the attempts.

The SES has made 220 rescues and is facing 100 outstanding rescues in the region and has warned people to cooperate and stay out of floodwaters, which are at "unprecedented" levels across the north coast.

Overnight, Australia's Bureau of Meteorology predicted Cyclone Debbie would make landfall as a category 4 tropical cyclone - just one stage below the most dangerous wind speed level.

The state government last night warned 25,000 people living in parts of Mackay to head to higher ground, as dangerous tidal surges of up to 1.7m were forecast.

The storm, which forecasters expect to cause serious damage to parts of the east coast of Australia, is set to make landfall on Tuesday morning local time.

The Whitsunday Islands, Townsville and Ayr are all expected to be affected by destructive weather, which includes extremely strong wind, torrential rain and flooding.

Police officers and emergency service volunteers have been going to homes, hostels and hotels, telling people in affected areas to evacuate.

The Bureau of Meteorology (BOM) has warned the storm will be the worst since Cyclone Yasi in 2011.

The system is about 400 km off Townsville and is due to intensify into a category four system and cross the coast just south of Ayr about 8am Tuesday (local time).

Evacuation orders are in place for low-lying areas in parts of the Burdekin, Whitsunday, and parts Townsville council regions.

"You're going to see people without power for some time, large trees down, roofs damaged," meteorologist Adam Blazak said.

Their mother, Rachael Moore, had been shot in the arm by her ex-husband Daryl Fields.

"I hid the gun ... and ran back in and he was on top of my mother strangling her," Cameron said.

"So then I went up and hit him across the head."

Everyone helped.

"My brother Jayden got him off my mum. My younger sister Kaylea took mum out and hid her in the yard and the youngest boy Zane — he went and took my little baby sister Samantha and hid her under the bed."

During the performance in Melbourne she said: "Just before we go to the next song… excuse me sir? Could you stop telling people to sit down?"

But it's just the latest Adele-ism from her Australian tour to get people talking.

In her time down under she's had run-ins with bugs, announced a secret social media account and revealed her unusual approach to getting on stage.

She loves a proposal

Footage obtained by the ABC's 7.30 current affairs programme revealed bed rolls and dirty sheets next to the baggage carousel in the staff-only area of Sydney Airport's international terminal.

Napping between shifts is a result of the "Americanisation" of the Australian workforce, according to the Transport Workers Union (TWU).

Split shifts that start early and finish late and limited guaranteed hours mean it is not worth workers' while - financially or timewise - to return home when they are rostered off, according to the union.

The Queen Mother said it was "one of the wonders of our time".

But of all the nicknames Sydney's iconic landmark received in the past 85 years, the Iron Lung is one that echoes its significance for those who built it.

The construction employed 1,400 builders who were paid as little as four pounds a week at the height of the Great Depression.

More than 200 families living in the far New South Wales south coast town of Moruya were able to put food on their tables because they worked out of the quarries which provided the granite for the bridge pylons.