It all makes sense to me. When you consider the skin is the largest organ of the body, having it all exposed to ozone is probably a greater detox than just an auricular or rectal insufflation. Besides, the heat from the sauna also tends to tire one out. I would suspect the tiredness after the sauna is from the heat combined with cleansing reaction. My fav is still the sauna if I want to get rid of a bug that's chasing me.It definitely kicks out the bugs fast.
Hope everything's just GREAT with you and yours!