be at risk of nutritional deficiencies as well as poor physical performance.General healthy-eating guidelines as well as specialist requirements for athletes apply to meat-eaters and vegetarians. You daily aim should be to base your meals and snacks

. Usually I urge people to get nutrients from food, but in this case it's easier and more effective to take a fish-oil supplement, because eating too much fish raises concerns about mercury."

the simplest actions, such as standing up, and challenging activities, such as, well, triathlons. But it also needs nutrients to keep it in the best shape possible. So you need to be eating good food, not any food. The right amounts of vitamins and minerals

. "Training rides are prime opportunities to practise race-time eating and drinking strategies," says Eberle. Once you discover a winning formula, you'll approach your next triathlon with a foolproof plan.Change it: Test new foods on shorter rides before

to the bowl of pasta you were planning for lunch. You don't need a nutritionist to tell you that refined, processed foods such as cakes, biscuits and pastries have little nutritional value, but many complex carbohydrates are also refined, which complicates

brain, a proper nutrition plan may take a back seat.But proper nutrition is central to your training and to race success. By fuelling correctly and ensuring you're hydrated before, during and after training, you will perform and feel better and still