At a minimum, you should add B-12, a B-50 Complex and magnesium to you vitamins. But, if you don't believe us, I don't know what to tell you.

40 minutes of cardio is not light cardio unless the equipment is set for very slow. I doubt it. But, if it does not cause headaches or an increase of other symptoms, it should be OK.

What do you do throughout your day ? What kind of living environment ? What kind of sound and visual stimulation is a normal part of your day ?

I wonder if your physical therapist really knows much about concussions. Getting good blood flow is good but what else is she saying your should do ?

The issue is peak levels of activity/stress. Limiting those peak levels should be helpful.

Just as peak levels of alcohol are also a problem. You'll just have to believe us. I am not interested in digging up the research. The brain injury specialist at our rehab clinic says NO alcohol. Others say a single serving is OK if it helps lower stress levels. As I said, they consider it a trade-off.

"Well, I haven't been drinking alcohol often, but all right I'll continue to not drink as much as possible."
Isn't drinking a choice ? It is possible to not drink at all. If peer/social pressure is a problem, then you have a different issue to deal with.