Drank way too much last night at a friend's housewarming but didn't puke though. Woke up in the wee hours this morning with my heart pounding fast, so much that I felt my fingertips tingle with my heartbeat. And I don't get this way even when I run. No hangover but today's running in the gym got screwed up by the drinking, and yesterday I was even thinking of progressing to running 10km in an hour.

I need to know my limits.