I went for my usual morning run today. Usually, I am a bit tired after the run. For some reason, today was different. During the run, I felt a bout of irrational exuberance come upon me and ran sub-10-minute miles for the first time in a long time. More importantly, after the run, I felt less tired and more energized. What gives?

I think I will go back to sleep and wait for this feeling to wear off!