Fuelling for an Ironman triathlon is as much an art as a science. Knowing what to eat and when is crucial to peak performance. Many triathletes will tell you that their success comes as much from making the right nutritional decisions before

.In Sports Nutrition for Endurance Athletes, nutritionist Monique Ryan notes that, "For endurance athletes they [supplements] are crucially important. Because of your training and the stress it imposes on your body, you may need higher amounts of vitamins

We've all had grim days when we've felt lethargic and fatigued as we slogged through training - days when our body has simply failed to respond as it should. And we all experience aches and pains that we think are to be expected in triathlon

consult your doctor before making any decisions about supplements.In Sports Nutrition for Endurance Athletes, nutritionist Monique Ryan notes that, "For endurance athletes they [supplements] are crucially important. Because of your training