Vertigo and nausea. Not sure of the cause, but if its not better in a day or two I'm off to the Dr.
After a week of feeling like I just got off the merry-go-round, I think I can start training again. Pretty sure it was/is an ear infection, but apparently one's brain learns to accommodate the changes in signals that cause the vertigo, so the spells just get weaker on their own over time. In fact, it's best to 'tease' them (moving the head around to cause dizziness) to force the adaptation to occur. Go figure.