Been trying to learn to play Run to the Hills on the drums. Which, is kind of phrased wrong because the song itself is super simple. But I feel like I've run a god damn marathon every time I play it. Really just working on getting fast enough to play it. It's such a fun song though because not only do I feel like I've run, it sounds like it too! I can get about halfway through keeping pace before I really just run out of steam.
It also coincided with my wife wanting me to try wearing a fitbit for a week. I think I did something like 1500 "steps" just on this one song.