Alright, this is some heavy stuff here. If you 're trying to get through a tough part of your run, as in the last stretch of a grueling jaunt, this is for you. I actually set up a playlist (yay!) for a 50-minute run and this song is towards the end of it. I timed it that way, so it can help me make one last push.
You have to be careful with this, though. These kinds of songs can give you a big boost, but it might be a bit much. If I put a song like this in, say, the 20th minute of my 50-minute run, I may give too much of an effort there and might become exhausted earlier than I should or would have otherwise.
Either way, though, it kicks some major ass.