Being rejected isn't a nice feeling, but it shapes who we become. Sophie Duker, Heidi Regan and Ned Sedgwick are joined by comedian Darren Harriott to share painful tales of rejection and to discuss the best ways to bounce back. Sophie reveals how to avoid feeling stung if someone doesn't want to kiss you, Ned has a go at stand-up, Heidi describes how years of rejection led to a career in comedy and Steve tells us why it was love at first sight when he came to the UK as a refugee.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

In our materialistic world, we surround ourselves with shiny things to make us happy. Sophie Duker, Heidi Regan and Ned Sedgwick are joined by comedian Rhys James to talk about the stuff we couldn't live without, the stuff we don't need and the stuff that's killing our planet. Sophie describes the eclectic contents of her room, Ned goes on a pilgrimage for a kebab, Heidi wonders whether the 'internet of things' will make us any happier and Steve Ali tells us why material possessions lost their importance the moment he became a refugee.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

Insecurities can turn even the kindest person into a green-eyed monster. Sophie Duker, Heidi Regan and Ned Sedgwick are joined by comedian Jayde Adams to talk about the different types of jealousy and how we should deal with such an instinctive emotion. Sophie talks about the role of jealousy in an open relationship, Ned auditions for Love Island, Heidi investigates so-called 'JK Rowling envy' and Steve reminds us why we shouldn't be jealous of those younger than us.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

Language shapes the world around us and opens doors to far-flung cultures. Sophie Duker, Heidi Regan and Ned Sedgwick are joined by writer and broadcaster Yassmin Abdel-Magied to talk about how languages can be really hard to learn, but can make you see the world in a wholly new light. Sophie parle Francais (elle est tres bonne!), Ned has been teaching English on the other side of the world, Heidi brings some sci-fi dystopia to the episode, and Steve Ali tells us his favourite words in the English language: 'you are welcome here'.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

From tiffs to barneys to blazing rows, arguments are a staple of life. Sophie Duker, Heidi Regan and Ned Sedgwick are joined by comedian Sadia Azmat to talk about the best and worst arguments they've had and how emotions and ego can get in the way of any constructive outcome. Sophie tells us why she loves a full-blooded debate, Ned asks a debating champion how to argue better, Heidi reveals why disagreeing is a bit like fencing, and Steve Ali has a take on a norm that spans all cultures: disapproving parents.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clip:

It's the squishy thing in our head that makes us do brilliant (and stupid) things. Sophie Duker, Heidi Regan and Ned Sedgwick are joined by neuroscientist Dr Hannah Critchlow to talk about your brain on drugs, the noise your thoughts make and whether free will is an illusion. Sophie wonders how we can hack the brain to make it work better, Ned gets a brain scan, Heidi investigates how dark chocolate might improve memory, and Steve Ali ponders how the brain copes with traumatic memories.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

In a world that wants you to work work work, leisure time can feel elusive. Sophie, Heidi and Ned are joined by journalist and writer Yomi Adegoke to talk about the best ways to revel in precious free time. Sophie talks about the dangers and blessings of monetising your hobby, Ned reveals his inner gaming nerd, Heidi investigates whether procrastination leads to creativity and Steve Ali workshops his refugee CV.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

Siblings, the combination of a best friend and a pain in the neck. Sophie, Heidi and Ned are joined by comedian Olga Koch to talk about the special place brothers and sisters occupy in our lives as best friends, worst enemies and distant acquaintances. Sophie highlights the fun of extended families, Ned brings a brotherly rivalry to the studio, Heidi looks at telepathy in twins, and Steve Ali swings by to talk about his family dynamics after his siblings also became refugees.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

New series, new voices: As GrownUpLand makes a new beginning, the gang explores the idea of starting points, debuts and second chances. Sophie, Heidi and Ned are joined by comedian Sarah Keyworth to talk about everything from the early beginnings of humanity to coming out for the first time. Sophie relives how her career got kick-started, Ned decides to become an influencer, Heidi looks at the 'second chance effect', and Steve Ali stresses the importance of claiming a shelf in the fridge.

Co-created by Deborah Frances-White for The Spontaneity Shop and BBC Radio 4.

Produced by Al Riddell.

Music by Mark Hodge and Omahrose, produced by Nick Sheldon.

Clips:

It’s back! The only podcast that successfully encapsulates the fear, regret and bewilderment of an entire generation. New hosts Sophie Duker and Heidi Regan join Ned Sedgwick and Steve Ali to give a little taste of the series to come.