than usual in the last three days before the race,” says Tichenal. About 60 to 70 per cent of your calories should come from carbohydrate sources. Pasta, potatoes, rice, cereals and fruit are healthy choices, but even fizzy drinks and sweets do the job

. By not taking in carbohydrate drinks or energy gels during the run, you're giving your body no choice but to go to fat-burning. You will feel fatigued near the end, but that's necessary if you want to get stronger." Should you try it? Don't go out

're feeling unmotivated, or you aren't sleeping that well. The cure-all is rest. Don't run for a day or two, and when you start up again, stick to easy runs until the bothersome signs disappear. Treat your feet Those beefy, well-cushioned shoes you wear