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WS MoreOrLess: Is strenuous jogging bad for you?
Tim Harford asks whether claims that keen runners might be damaging their health are really true? And is infidelity among cruise ship passengers rife?
This programme was first broadcast on the ÃÛÑ¿´«Ã½ World Service.
Podcast
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More or Less: Behind the Stats
Tim Harford and the More or Less team try to make sense of the statistics around us.