to as little as possible, or binge-eating and purging or excessive exercising – will impair your performance, and can damage your health permanently.Eating disorders are more common among male and female runners than among the average population. Sometimes

We all know that running can help us control our weight, improve our fitness and, crucially, make us feel better about ourselves. But all these things are complicated when you're suffering or recovering from an eating disorder. This week's question

Guy Meadows of the London  Sleep School (thesleepschool.org). The sleep-disorder specialist and ultra marathoner has worked extensively with distance runners. “They often end up absolutely physically exhausted, but mentally wide awake,” he explains

physical and mental stress of over-training and disordered eating, may not gain these benefits. Several studies have shown women who have disrupted menstrual cycles suffer more stess fractures than their counterparts with normal cycles. These women