Was participating in a 3 day bicycle ride. The first day I really struggled - lack of energy and very weak in the legs. Having just bought a new earthing recovery bag thought I would try it. Rested on it for a while that afternoon then slept in it that night. I was a little concerned about the next day's ride as it was longer with many more hills. I felt strong & energetic, rode up every hill and finished feeling great. Was it being earthed or some other miraculous reason?