7. Big Chicken

Exercise - A Thorough Examination preview

Drs Chris and Xand van Tulleken investigate the science of exercise and the dangers of inactivity.

Is modern exercise a wellness cult? Or is it a vital cure for a world that’s struggling with ill health and stuck on the sofa? Most of us might like to get a bit fitter, but how easy is it to actually start exercising and give up sedentary habits?

In this series Drs Chris and Xand van Tulleken examine exercise and how best to do it. How much should we be doing? How does it help our bodies? And how does our surrounding environment stand in the way of us getting fitter? Chris is challenged to examine his scepticism towards exercise. Similarly, Xand is asked to look at his new-found exercise evangelism and see what he is really running from.

Recently Xand has discovered the joys of physical activity. He’s running, cycling, heading to the gym and playing ping pong like never before. It’s been a real transformation and a way to keep on top of things after years of unhealthy living.

His twin brother Chris, on the other hand, is really feeling the aches and pains of middle age. With a busy job and a young family, he has precious little spare time for exercise. After a very active period in his 20s and 30s, Chris is now embracing his ‘Dad bod’ and sliding into a creaky middle age. Xand wants to help him turn things around. Can he do it?

The box set is available now on BBC Sounds.

8. Beyond the Bird

So we’ve got a comprehensive overview of the chicken planet we live on... Do we still want to eat it? And if NOT, what are the alternatives?

Dr Chris van Tulleken wrestles with the final dilemma: slaughter. Could he bring himself to dispatch an animal himself? Is he happy supporting an industry which kills animals in his name? And if not, what could he eat instead?

We explore the rise of the alternative protein industry – plant-based meat alternatives, lab-grown meat, or most shocking of all for some, actual meat abstinence. Veganism.

Where should we go from here?

And it’s time to revisit that initial question: what’s influencing our choices when it comes to eating chicken, what impact is that having – and are we bothered?

7. Big Chicken

We're a planet addicted to chicken - and our appetites fuel a massive global industry... but is it one we should support?

As Chris wrestles with how he personally feels about this weird and wonderful bird, he decides to take a look at the business as a whole: a global industry that's cited by some as a shining example of a super-efficient food production system, one that could help drive food security around the world.

But others say it’s a cruel, destructive and outdated structure that makes a few people richer while exploiting others – along with animals and the environment.

In Brazil, one of the world’s biggest chicken and soya producers, our reporter Leonardo Milano hears accusations of threats and pollution relating to the feed sector; while in Africa, Chris learns about poultry-farming initiatives helping to make struggling nations more food-secure.

And then there are the other challenges that the industry is wrestling with: from antimicrobial resistance to the threat of another major global pandemic, potentially stemming from chicken farms…

So is there a ‘big business bad guy’ to blame – or does responsibility lie closer to home, with unquestioning consumers like Chris?

Produced by Lucy Taylor and Emily Knight. Additional reporting, editing and translation by Fernando Otto, BBC News Brasil.

6. The Fast Food Trap

Chris has learned how to make better chicken choices, and what those choices really mean.

So why is he STILL eating CRAP?

Like many of us, Chris is always trying to eat better food: healthy, high welfare, good for the environment. This kind of consumer demand is making the chicken industry better, in tiny increments. So why do so many of us give ourselves a pass when it comes to the food we KNOW we shouldn’t be eating, yet we do in absolutely vast amounts… fast food?

Chicken is at the very heart of this industry. As a cheap meat that doesn’t have a strong taste, can easily take on other flavours and doesn’t have any religious restrictions, it’s the ideal takeaway ingredient; from nuggets to chow mein to tikka masala.

And although we might be careful about chicken choices when buying it raw to prepare at home, somehow we don’t seem to mind turning a blind eye to the origins and nutritional content of our fast food favourites, especially if we’re hungry…

Chris discovers just how bad this food can be for both us and the planet, and why we’re powerless to resist it.

Produced by Emily Knight and Lucy Taylor

5. Fine Print

Do YOU know what you're eating? Are you sure?

Dr Chris van Tulleken is keen to make good food choices, and buy the best chicken possible for his dinner. High welfare, tasty, and good for the environment, ideally. But it's not as easy as that. How CAN he make good food choices if he has no idea what he's buying?

Chris explores what we actually know about the food we buy, and to what extent we can trust what's on a label.

He also uncovers the startling truth about two very different ways that we buy chicken - lifting the lid on why sometimes, even the most moral meat shoppers turn a blind eye...

Produced by Lucy Taylor and Emily Knight.