Just rode into work as normal - 11 mile commute. Arrived, cooled down for a few minutes and took a shower. All good. Dried off, got dressed, went to office.
That's when it started. The sweat came. My shirt was wet through in the space of about 5 minutes - and I mean drenched! I've had to take it off and stick it in the drier with my bike clothes.
So what happened?? I ride in every day and have never had this before. I feel fine in every other aspect.