20-1 burpee reps ladder down
(20-19-18-17 to 1)
After every even number of burpees - run 100m and back
After every odd number of burpees - 20 push ups and 20 situps
eg.
20 burpees then run 100m and back
19 burpees then 20 push ups and 20 situps
18 burpees then run 100m and back... all the way to 1 burpee