Something I failed to mention, but when you talk about hormones... I broke my wrist about two weeks prior to the relapse, and had to have surgery to have it repaired (plate and screws inserted). So my body was in a mild state of post-surgical crisis when this happened. The healing from wrist surgery is going well, but the two have been happening concurrently.

Follow-up: SUNDAY... Went for a walk around the neighborhood that night, thanks to the consensus on this board, and got 6.5 hours of sleep that night. Monday morning, felt more clear-headed in the morning than I had in two weeks. So I assumed: Exercise is good!

MONDAY... So Monday night, feeling emboldened, I did 30 minutes on the trainer at 75% max heart rate (85% is more my usual rate, with interval training up to 95%). Followed with another 6.5 hours of sleep. This morning feels like a significant step back into fogginess and light headed sensations.

I know, I know… sub-8 hours of sleep is not optimal, but I don't necessarily see a correlation there, since getting 8 hours of sleep over the weekend did not help, and the clearest I've felt in 10 days was following 6 hours of sleep and a 1.5 mile walk.

So I guess the conclusion I draw is that I'm not yet far along with my healing process to do semi-intense exercise like I did last night. I find it somewhat bizarre. Again, maybe it has to do with my body repairing a broken bone simultaneously. I’ll stick with the walking for now.

Yeah, we have to be careful with exercise. I was recently told that I should work on increasing frequency of exercise first rather than duration. For example, if you can do a 5 min walk without symptom issues you're better off trying two 5 min walks spread over a day rather than a single 10 min walk.

I definitely have been guilty of going to increased duration before frequency many times and in every case it's been an issue. I'm currently working on doing frequency instead.

Also, remember on those days that you feel "good", don't try and do too much... again, I've been guilty of doing this and it's always a set back.

Regardless of all this, it's good to hear that you can do some exercise!

Yes, MM, I am grateful for the ability to be able to do exercise, and grateful for not having truly debilitating symptoms. I will work on increasing the frequency of my late afternoon walks, rather than diving back into moderate cardio.