I'm not sure why I thought doing a tabata upperbody workout would be easy. I did 8 sets, 0:20/0:10, of pullups, pushups, dips and an Indian club workout. I haven't done squat since getting kneed in the thigh last Monday night so I was definitely feeling it. I think most of my upperbody strength is held back by weak hands and/or wrists. I don't know if it's because of too much computer use (carpal tunnel) or what, but my hands don't feel as strong as they should be. My calluses hurt after a couple of pullups, but eventually I started to get fatigued elsewhere - it traveled down to my arms.
The pushups weren't too bad, but I was nearly too wasted to bang out proper dips. The Indian club workout is more for loosening up my arms and shoulders than anything.
I wonder if once a week of tabata is sufficient or would more be too much?