Well today was rather interesting. Before my normal mountain bike ride after work, I ate my normal two powerbars, drank plenty of water during the day and before I went out.
While on the ride, I pushed myself harder then normal, and I felt lightheaded. Being the brash guy I am, I kept pushing myself. The strange thing was, I had more energy then normal, and hammered for about 5 miles home on the street on my mtb.
My question is, why was I feeling so lightheaded, yet at the same time feeling stronger than I normally do?