Naked Scientist: Why yawning is contageous

This week, The Naked Scientist, Dr Chris Smith explains why yawning is contagious and that humans yawn to improve arousal and alertness. Yawning occurs to cool your brain because a tired brain is a hotter brain.

Yawning in sympathy with other people yawning is a brain cooling manover to increase alertness.

Chris Smith, The Naked Scientist

Answering a twitter question as to why babies gesticulate when they are emoting with their legs, the naked scientist said that this was due to the fact that humans aren't fully developed when they are born, thus their brain motor pathways respond a certain way.

We are born absolutely useless and were it not for our parents, we wouldn't survive five minutes.

Chris Smith, The Naked Scientist

The Naked Scientist answered different other questions from listeners. Listen below to this insightful interview.


Recommended

by NEWSROOM AI
Read More
Genesis of the Eskom problem is ANC looting says Eusebius

Genesis of the Eskom problem is ANC looting says Eusebius

Eusebius McKaiser facillitates a debate between callers about their frustrations due to load shedding.

The psychology behind why some people fall for dodgy pastors

The psychology behind why some people fall for dodgy pastors

Clinical psychologist Hayden Knibbs says that a number of factors influence a believer's ability to be manipulated.

[LISTEN] Sarb independence more important than nationalisation debate - experts

[LISTEN] Sarb independence more important than nationalisation debate - experts

Economists Annabel Bishop and Duma Gqubule both believe that nationalising the SA Reserve Bank won't have any substantial impact.

#TalkingSex: 'I think that penises are going to be easily replaced'

#TalkingSex: 'I think that penises are going to be easily replaced'

Dr Eve unpacks the traditional belief that a man has to be the one who gives his woman orgasms and also talks vibrators.

A one of a kind WhatsApp news channel launched #SMWX

A one of a kind WhatsApp news channel launched #SMWX

The Sizwe Mpofu-Walsh Xperience (#SMWX) aims to bring subscribers in-depth conversations of South Africa's politics.

'How do you stay plugged into the news cycle and not compromise your sanity?'

'How do you stay plugged into the news cycle and not compromise your sanity?'

Eusebius McKaiser facilitates as a discussion with callers on what people do to find balance in a news charged society.

Popular articles
I come from having very little, to having a lot - Craig Gradidge

I come from having very little, to having a lot - Craig Gradidge

The Money Show’s Bruce Whitfield interviews Gradidge about his attitude to money (hopes and fears, successes and failures, etc.).

'The next Steinhoff is around the corner!'

'The next Steinhoff is around the corner!'

The Steinhoff-debacle happened while the world praised SA for its auditing standards. Bruce Whitfield interviews Dr Steven Firer.

'I left Australia for SA so that my sons can practice their religion in freedom'

'I left Australia for SA so that my sons can practice their religion in freedom'

A Muslim mom and former community spokesperson - now living in SA - recounts the deep-rooted history of Islamophobia in Australia.

Load shedding will be resolved permanently in a few weeks - Fikile Mbalula

Load shedding will be resolved permanently in a few weeks - Fikile Mbalula

ANC head of elections, Fikile Mbalula says the president is hard at work to resolve Eskom's problems.

Genesis of the Eskom problem is ANC looting says Eusebius

Genesis of the Eskom problem is ANC looting says Eusebius

Eusebius McKaiser facillitates a debate between callers about their frustrations due to load shedding.