Did you have a headache? Nausous? It sounds like you may have have a
bout with low blood sugar. What bodypart did you work? What was your
diet like the day b4 and the day of? If I do not eat well for some
stupid reason, I get very sick after a w/o. This has not happened in a
year or two, but the last time was on a leg day. Because the legs are
such large muscle groups, the workload can very easily dip your blood
sugar if you have not eaten right. Just a theory, but if it isn't
happening every w/o, look for the things you did different in that w/o
and nutrition wise the day b4 and the day of.
JP