Swans - My Father Will Guide Me up a Rope to the Sky
I sort of went in knowing this would not be the type of album that is good for workouts. Honestly, though, I came out of it with a more positive feeling about its possible use as such. I can't say I'd recommend the whole album, because there are just too many times where it slows to a crawl. When it does pack some punch, it does it in a way that can easily motivate someone to run. Songs like "Jim" and "Eden Prison" really pull out all the stops and jam pretty hard.
Sonically, the My Father Will Guide Me up a Rope to the Sky is impressive in a way I'm not entirely qualified to elaborate on. If you like Embryonic or Godspeed You! Black Emperor, definitely give this album a try.