Hello everone - About two and a half years ago I sustained 2 concussions within a few weeks by getting thrown on the ground during karate. I didn't realize I had the first one- I thought I was sick- and went back to class and was repeatedly thrown. Since then I cannot do any exercise or symptoms recur. (Actually I can walk at a casual pace, like shopping at the store. But something like quick vacuuming will set me off) I am finally OK on a daily basis as long as I don't exercise or do anything that shakes me. The symptoms are the usual- dizziness, fatique, headache, insomnia, irritability. But one of my recurring symptoms I haven't heard much about and wanted to see if anyone knew anything about it. My cardiologist does not. It is an increased heart rate that I notice at night and keeps me up pretty much all night, hence it is 3 am right now. I checked my resting heart rate in bed before I got up to write this and it was about 90. The other day I missed a step and got a jolt and retriggered my symptoms so it's back. It happens anytime I overexert myself or get a good shake. And then for a few nights or weeks, depending on how bad a thing I did, it's like I can't control my heart rate normally. I tried a beta blocker but it doesn't work. In general it's been a long two years of adjusting to a sedentary lifestyle from a very active one and trying to keep sane. But my husband always reminds me that I could have been Natasha Richardson and I should feel lucky. Would love any feedback!