Tim Dowling: I've been doing boxing training once a week for about four years, with more or less the same group of people, though occasionally one of us moves away or is invalided out.
Britain's top athletes are on their marks for the 2004 Olympics, which begin on Friday. But how will training at an elite level affect them long-term? Diane Taylor asks four past medal-winners about their health now.
For 12 weeks we've followed his gruelling training regime for this Sunday's marathon (and his obsession with isotonic drinks and toilet training). But with time running out, it's all going horribly wrong for David Munk.