fractures; longer recovery time after intense workouts and races; anxiety; and fertility issues in women. Probably the most disturbing consequence, however, is the onset of a  full-blown eating disorder.Leslie Bonci, director of sports nutrition

snacking is in. Actually it’s not even called snacking any more – it’s called ‘grazing’, and nutrition experts now believe that grazing on five smaller meals throughout the day is better than eating three big ones.Why should this be? It’s mainly because a

that it's a good idea to limit dehydration as you run, in the real world many runners completing marathons between three and four hours do so with a level of dehydration between two and five per cent. So, if you've been following current guidelines