Adam Walton visits Bangor University's School of Sport Health & Exercise Science, to find out why marathon runners and extreme sports enthusiasts are more prone to catching colds. Show more
Discover 11,128,835 listings and 279,600 playable programmes from the BBC
Adam Walton visits Bangor University's School of Sport Health & Exercise Science, to find out why marathon runners and extreme sports enthusiasts are more prone to catching colds. Show more