Wow, I don't find running leaves me energized. While I enjoy running (and especially long distance running), I find it leaves me drained and often depressed af

Wow, I don't find running leaves me energized. While I enjoy running (and especially long distance running), I find it leaves me drained and often depressed afterwards. I don't get the Runners High that so many mention, if anything I get Runners Low. I generally enjoy the run and find it helps me lose weight in the long term, but I also find it saps my productivity because I feel so terrible & drained afterwards. [Since my post is so negative, let me add a recommendation for an iPod Shuffle or Bose QC25s while running. I find the music helps me run 10 - 20% faster if I choose the right music, typically music by Pendulum.]