What can you do when you can't sleep? Is there anything more frustrating than lying there in the dark with your eyes open - especially if it's not just now and then, but night after night?

People around the world are spending more and more time being physically inactive - and this is having a negative impact on their health. In the UK, 20 million people don't do any exercise at all. Finland used to have one of the highest mortality rates from heart disease but it's managed to reverse this trend. Dan and Catherine talk about Finland's experience and teach you new vocabulary.

Cakes, chocolate and crisps! Comfort food refers to snacks and meals we like to stuff our faces with, even if it’s not always good for us. Neil and Rob talk about comfort food and what actually makes us eat it.