Hehehe very successful your publication friend, today particularly happened to me, I have no idea what to write, I'll wait tomorrow to see what I think, but I think it had to do with everything I had to do in the day, and some of the stress. Tomorrow will be another day and I will see what idea comes to my mind. The exercise option is good, it certainly allows us better circulation and therefore better oxygenation of our brain. Very good technique!
I really use that and meditation to do deep breathing helps me to calm my anxiety levels and clear my mind.