10 double-unders
10 sit-ups
1 x Cindy
20 double-unders
20 sit-ups
1 x Cindy
30 double-unders
30 sit-ups
1 x Cindy
40 double-unders
40 sit-ups
1 x Cindy
50 double-unders
50 sit-ups

Cindy = 5 pull ups, 10 push ups, 15 squats