Hot flush after riding uphill

I just wonder if this happens to anybody else? I’ve noticed recently especially when it’s cold, but when I’m doing a long uphill section on my gravel bike – when I finish the uphill section and sit down I get a sudden flush of heat in my torso.

It’s not unpleasant and it’s not causing me any problems, but I wonder is this just the heat hot blood being released from the quads at the end of the uphill section flooding into the rest of the body? Does anybody else get this?

Q