O.K. so I lied. I did workout yesterday. I did some lazy warm ups like bridging on the Bosu ball, downward and upward dogs, held the low position of a hindu squat. That was after letting my back rest for about 10 minutes laying on the bed talking to my wife on the phone doing Z drills too.
I did 408 one handed swings in 23:30 minutes with a 53# kettlebell. I worked it 30/30 work to rest ratio starting with the left hand for one cycle then the right for the next cycle. I didn't break a sweat until the last set. I met my goal of 400 reps. I will try more next time.