I think I'm still on the fence. I guess that's the question, if there are any warnings before it is too late to try and do anything to defeat the invaders? I was outside yesterday a bit, going in and outside and noticed that the cold weather seemed to go through me, granted it was a windy cold day, something didn't seem right. My energy levels seemed off. I have a break in work today so I'm in bed relaxing before heading out in the cold again. Googling did not turn up much info about symptoms before symptoms of a cold or flu, pre-symptoms symptoms.