I was sparring with a friend on the weekend and wasn't properly warmed up. I caught a right hook to the ribs and I knew immediately that something wasn't right, so I woke up the next day with a pain in my back...feels like I aggravated an old back injury on that side.

I can't run right now, but I can powerwalk, so I powerwalked at lunch, stopping every ten minutes on the treadmill to go elsewhere and do 8 chinups, 15-20 handstand pushups, 15 hanging kneekicks, and 12 hanging trunk twists with knees elevated.

I did 5 sets of that circuit. Even though I'm essentially doing a bad-back workout, I'm staying active. I'll be doing more powerwalking tonight, and my body should be back to normal in a week or so.