Pulled this WOD from CrossFit King of Prussia.
AMRAP in 15 minutes
10 box jumps (20'')
15 double unders
Results: 8 rounds
Was very happy with my result. I was absolutely miserable pretty much the entire time, and had the lung burn too. Hopefully this is helping get my cardio conditioning back where it needs to be!
And this was another day where I was very happy I spent the time learning double unders, so I'd have them when I needed them. I think I only got 2 or maybe 3 rounds with unbroken DUs, though -- I was just so damn winded and my legs were tired!