Best workout songs?

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Hi MFP!

Do you ever have one of those days where you know you should go to the gym, or go for a run, or get off your butt, but you just can't seem to muster the motivation?

Well, I want to hear your best "pump-up" songs that get your blood racing, and your motivation skyrocketing! The ones that make you think "Heck yeah, I can do this! I'm going to crush this set, dominate this mile, power through this interval!"

I'll post a couple of mine below:
(Please note- several of these songs are definitely not workplace appropriate, so listen at your discretion!)
***Flawless- Beyonce
Pour it Up- Rihanna
Black Widow- Iggy Azalea
I Fink U Freeky- Die Antwoord
Sunshine- Matisyahu
Get Back- Ludacris
Demon Kitty Rag- Katzenjammer
And We Danced- Macklemore
Cruise- Florida Georgia Line


*edit- please let me know if this isn't the right place for this topic, and I'll happily move it.