Just like a workout routine can grow stale, no matter how much you love a song, sometimes it gets old. But hearing an awesome cover can renew your interest-or, if you didn't care for a song the first time around, the different approach might appeal.

This week's playlist is all about new takes on old favorites. Starting with the most versatile of the tracks, you've got Zooey Deschanel and M. Ward's version of the Buddy Holly classic "Oh Boy" and Rascal Flatts' uncharacteristically feisty approach to Mötley Crüe's "Kickstart My Heart." Creative choices aside, the real versatility of these tracks is in their tempos. Both clock beats per minute (BPMs) in the high 80s, which would generally suit them for lower-intensity routines, but the feel of both songs is so fast that you could use them at twice the tempo (putting them in the 172-178 BPM range). So if you're a runner, you'd take two strides (or do two reps for lifting) per beat so that your left foot hits the ground every time you hear a beat and your right hits between beats.

There are also a few picks for routines that fall somewhere in the middle tempo-wise. For a simple jog, you can check out James Bond songstress Shirley Bassey channeling Pink or Mariachi El Bronx reinventing Prince. If you're looking for quick pick-me-up, try Pitbull, T-Pain, Ludacris and Sean Paul's update of the Harry Belafonte (and Beetlejuice) classic "Jump in the Line (Shake Señora)." It's not a cover in the strictest sense since the crew contributes new verses, but it borrows liberally from the intro, hook, and general exuberance of the original.

Check out the list and tell us which covers get you going on a workout! Comment below or @Shape_Magazine.

To find more workout songs, check out the free database at Run Hundred. You can browse by genre, tempo, and era to find the best songs to rock your workout.