cold head

Okay so for a little while, I’d say somewhere between 6 to 7 months the tip of my penis will feel cold. This is not a constant feeling but sometimes when i feel it the head is cold. I use to wrestle 4 years in high school year round so I would always have my cardio in good shape. I have no real trouble getting an erection and i can stay hard it just sometimes it feels cold. I noticed today after my run that it was cold and hard when it was flaccid. Any help suggestions?