Started yesterday after finishing a 4 mile run, I had a serious headache, chills, and a not so chronic cough (although i could feel some phlegm at the very back of my throat)
My eyes feel strained if i look left or right. i felt very "out of it" for the entirety of the night too, until i went to sleep. Slept well, woke up and felt glorious. Ran again today, felt the same effects only diminished. chalked it up to hypERthermia (not hypo) however today i've noticed along with muscle cramps (from doing a very pitiful amount of pushups) i've got a stiff neck, not so much where i normally get them-to the sides of the spine, but seemingly right down the middle, with the most pain when i bend my neck forward.
It's probably nothing, but i wanted to get some input just in case.