Reaction after Treatment

I rarely make definitive statements about anything after the first treatment. Acupuncture is effective and can be extremely fast and very occasionally people may even need just one treatment - generally however one treatment isn't going to accomplish much. When you say, "I explained that this is just the healing taking change in his body and all the passing of fluids and Bowels are the releasing of damp heat and detoxing?" it's a good explanation to make him feel better and it may in fact be what is happening but don't leave out the possibility that he had something bad at lunch before the treatment or some other natural occurrence. In other words, not everything has to have an explanation or an answer or be tied to the treatment.

The down feeling could be dehydration from excessive bowel movements, possibly coupled with excessive exercise. I do agree that it may just be that he feels calmer from the treatment and calls that "down". This is quite common as people adjust to not being so strung out -- the calmness actually makes them uncomfortable initially... Again, however, I wouldn't read into too many details from one treatment - there are just too many variables and causes and it is almost egotistical of us as practitioners (not you individually of course) to equate every happenstance with what we did....

Your read on the patient and your points seem absolutely fine, I'm sure he'll be doing well after a few treatments.