where you train), sea water and soil, and may live in the noses of healthy people - in other words, it's all around us. Risk factorsBefore you use this as a convenient excuse to stop your early-morning swim sessions, the risk of infection is low

sunglasses) to help you reset your biological clock more quickly. Early morning walks are best for this. Do not overdo any exercise because at this stage you should be following a tapering programme as race-day approaches. BlistersIf you develop a blister

outdoors in the sun (without sunglasses) to help you reset your biological clock more quickly. Early morning walks are best for this. Do not overdo any exercise because at this stage you should be following a tapering programme as race-day approaches

and less pollen. Wearing sunglasses while you run can also help reduce the amount of pollen getting into your eyes.Changing your daily schedule might be inconvenient but can make all the difference. Because plants release their pollen in the early morning