Never necessarily because of a sunday or doldrums but I have felt that way quite a few times. Mostly just a thought runs through my mind(like having an appointment that I think of or thinking how I have to get the boat ready, etc...) and next thing I know I feel nervous. No really anxious but just a nervous feeling that only lasts a few minutes. Butterfly s in the stomach type feeling. Maybe its just minor anxiety. Actually has not happened in quite awhile now that I think about it but it has many o times in the past.