I've managed to avoid injury by being paranoid. Whenever my knees start bothering me, I reduce milage for a while until they feel 100% normal. The trouble is,

I've managed to avoid injury by being paranoid. Whenever my knees start bothering me, I reduce milage for a while until they feel 100% normal. The trouble is, when someone signs up for a big race, they feel pressured to stick with their training plan in spite of any discomforts.