20 minutes C&J ladder with 60k where

1st min = 1 C&J
2nd min = 2 C&J
3rd....

Keep ging as long as you can . When cant complete the reps for that minute cut the reops in half and finsih the remainder of the 20 mins at that level.

i got to the 7th minute, Carried on to 12 minute at 4 reps per min. Then dropped to 3 reps per minute to the end.

69 reps.