In this lively interview series from the RSA, Matthew Taylor, puts a range of practitioners on the spot - from scholars to business leaders, politicians to journalists - by asking for big ideas to help build effective bridges to our new future.

Matthew is joined by the author of 'Sweat: a History of Exercise', Bill Hayes. Together Matthew and Bill take a jog through history to find out more about our ancestors' attitude to keeping fit, and what we can learn from them next time we lace up a pair of trainers and hit the gym.

Bill Hayes is an American non-fiction writer and photographer. He's the author of several books including his latest, 'Sweat: A History of Exercise'.

A Tempo & Talker production for the RSA.

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