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
'Love your vulva the way it is' - Designer vaginas are dangerous, warns Dr Eve

'Love your vulva the way it is' - Designer vaginas are dangerous, warns Dr Eve

So-called 'designer vaginas' are created through various surgical or non-surgical procedures, explains clinical sexologist Dr Eve.

'Cyril is the most popular president since Nelson Mandela'

'Cyril is the most popular president since Nelson Mandela'

Author Max de Preez weighs in on where SA would be if Jacob Zuma was still president and the impact of Ramaphosa now.

[LISTEN] John Kani sketches stories about his childhood, family life and more

[LISTEN] John Kani sketches stories about his childhood, family life and more

Kani has always had a way with words. He transports us to his early years, his mama's kitchen in New Brighton and travels abroad.

 'I struggle to see the artistic or the aesthetic brilliance in Mabulu's work'

'I struggle to see the artistic or the aesthetic brilliance in Mabulu's work'

Eusebius McKaiser and a caller weigh in on Ayanda Mabulu's latest artwork that was removed outside the JSE on Wednesday.

SA must be alarmed by 'recapture of SABC' for political purposes - activist

SA must be alarmed by 'recapture of SABC' for political purposes - activist

Broadcasting union Bemawu says the portfolio committee on communications has failed in its oversight role at the corporation.

ANCWL stance on Pule Mabe differs from reaction to Mduduzi Manana say callers

ANCWL stance on Pule Mabe differs from reaction to Mduduzi Manana say callers

Callers on the Eusebius McKaiser Show debate Pule Mabe's sexual harassment allegations.

Popular articles
Africa State of Mind: 'My dream is to be global' -  Sho Madjozi

Africa State of Mind: 'My dream is to be global' - Sho Madjozi

In this episode of Africa State of Mind, Lee Kasumba chats to South African rapper Sho Madjozi about her upbringing, and rise to fame.

[LISTEN] Health tips for the festive season

[LISTEN] Health tips for the festive season

In the health feature, CEO of Proactive Health Solutions Dr Fundile Nyathi chats about some health issues the generally arise during the festive season.

Adriaan Basson the second journalist to lay a charge against an EFF member

Adriaan Basson the second journalist to lay a charge against an EFF member

Earlier on Friday, Karima Brown laid a charge of intimidation against a party member who sent her what she says is a threatening text.

'Love your vulva the way it is' - Designer vaginas are dangerous, warns Dr Eve

'Love your vulva the way it is' - Designer vaginas are dangerous, warns Dr Eve

So-called 'designer vaginas' are created through various surgical or non-surgical procedures, explains clinical sexologist Dr Eve.

'Shutdown of Ndalo Media is no surprise and is a blow to media diversity'

'Shutdown of Ndalo Media is no surprise and is a blow to media diversity'

The company will reportedly shut its doors in January 2019.

'Cyril is the most popular president since Nelson Mandela'

'Cyril is the most popular president since Nelson Mandela'

Author Max de Preez weighs in on where SA would be if Jacob Zuma was still president and the impact of Ramaphosa now.

Kidnapping for ransom on the rise in Gauteng

Kidnapping for ransom on the rise in Gauteng

Gauteng MEC for Community Safety Sizakele Nkosi-Malobane says kidnapers are out to get a ransom from desperate parents.

Here is what to do if you're affected by driving licence backlog

Here is what to do if you're affected by driving licence backlog

The WC Traffic Department has made provisions to cater for motorists affected by the backlog with the issuing of driving licences.

[WATCH] Internet search for talented singer Nosipho is over...she's been found!

[WATCH] Internet search for talented singer Nosipho is over...she's been found!

Khabazela shares tweets and Facebook posts that have gone viral.