I love the gym on a January morning. The frantic flush on the faces of the bankers as they Stairmaster to redundancy, the quivers of the anorexics staggering into their fifth mile. Actually, there aren’t any anorexics. The anorexics of Bloomsbury are clearly lacking in New Year’s resolve. Hardly surprising, as despite the tsunami of publicity annually devoted to the perils of eating disorders, only 19 out of 1,000,000 women are suffering from anorexia, according to Clinical Knowledge Summaries, as opposed to the 240,000 afflicted with obesity.