From the allergy queen:
actually allergies Can cause fevers. After all your body is trying to fight off something it sees as a foreign body so it'll call everything into play to fight it. The biggest problem with allergies is the symptoms can be very vague and nebulous: you may not feel "bad" but you sure don't feel "good". If you do in fact have some allergies And you're overtraining you are now taxing your immune system beyond it's abilities to fight back. So along with everyone else - take some time off. Or if you just can't stay off the bike (seems to be My problem!
) do what they call "active" recovery. The best description I read was: where you ride so slow kids on Big Wheels can pass you!!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"