When you're sidelined by injury your natural reaction should be to cut back on calories until it's time to return to training - and burning energy. But the healing process demands fuel, too. "It's like fixing a house," says sports dietitian Cynthia

free radicals, those unstable molecules that race around the body looking to inflict cell damage. Red peppers also contain lycopene, which may offer protection from some cancers. Peppers of all colours are a good source of dietary fibre

also offer protection against some cancers.Red PotatoesThe humble - and let's be honest, it's not much to look at - potato has had a bad reputation in terms of nutrition because we have a habit of frying it in fat, covering it with cheese or mixing

Q. I want to practise my nutrition for race day but my trainer says I should wait until a few weeks before the race so I get the maximum benefit - is he right?A. It's imperative that you experiment during training to find out what will work best