My lower right leg's been killing me for the past few days. Despite being supported by more orthotics than those worn by Frankenstein's monster, my right foot continues to overpronate and cause shin splints. Having to limp through Legs & Back wasn't exactly fun, but after popping some ibuprofen, I managed to complete the workout -- as well as Ab Ripper X -- without too much discomfort.
But believe me when I tell you that Siebers 80-20 Speed Squats (one-legged squats that quickly explode up into a jump) are not a good idea when you're nursing a fucked-up leg.