Saunas and cold plunge pools are popping up everywhere in the UK, bringing scorching heat and icy cold to a beach, city farm or park near you. Their users will be drawn to all the reasons why it is good for both mind and body. But what is the evidence for the benefits of saunas and cold plunges? In this April episode, Madeleine Finlay listens to Ian Sample and Dr Heather Massey, Associate Professor at the Extreme Environments Laboratory at the University of Portsmouth.
