My problem is kind of strange so I am finally beginning to think it might have something to do with my back.
I suffered a herniated disc between L3 and L4 in 2009. Currently the disc doesn't cause any discomfort unless I walk on soft sand or snow.
However whenever I do cardio or do any kind of activity like brisk walking running or anything like this, I get a headache a few hours later. By few hours I mean 4 - 5 hours later. The headache is strong that I need to take an analgesic so I am able to continue my day job.
Initially I thought it was dehydration so I made sure I was hydrating before, during and after the activity but this did not fix the issue.
So I am finally beginning to think if these headaches are related to my herniated disc. Does anyone else experience similar symptoms. I am desperate for an answer and potential cure.