Motivation is the key to keeping you primed to keep pushing heavy weight in the gym. And what better motivator is there than music? We asked the experts—our dedicated staff at Muscle & Fitness—what music makes their heart rates rise and carries them through a tough workout. Here are M&F staff-approved picks for the best metal that needs to be on your workout songs playlist. 

1. King Nothing – Metallica
2. Angry Again – Megadeth
3. Bodies – Drowning Pool
4. Ace of Spades – Motörhead
5. Down With The Sickness – Disturbed
6. I Just Want You – Ozzy Osbourne
7. Mother – Danzig
8. The Wolf Is Loose – Mastodon 
9. Raise the Hammer of War – Cobalt 
10. Scapegoat – Kylesa 
11. My Own Summer – Deftones 
12. Spring Fra Livet – Kvelertak
13. Kosmos – Yob
14. Khyber Pass – Ministry
15. Be Aggressive – Faith No More
16. Walk – Pantera 
17. Aces High – Iron Maiden
18. Beast and the Harlot – Avenged Sevenfold
19. Iron Man – Black Sabbath
20. Left Behind – Slipknot
21. Aerials – System of a Down
22. Rainng Blood – Slayer 
23. Kickstart my Heart – Mötley Crüe
24. Caught in a Mosh – Anthrax 
25. The Sentinel – Judas Priest