Hi e-head, I find your posts very interesting and thoughful. I think it is probably best not to exercise for the first few month after pcs. I was a little to eager to get back to bike riding and tried to use my trainer, but it just increased my headaches, so I finally gave up. Now I'm hoping to be ready by next spring. Walking seems ok. My head is still very sensitive and I am very cautious. It get's to be so all-consumming at times.

I'm looking forward to hear your story as I was also in a bike/car crash.