(Beginner)
With a continously running clock, do 1 burpee the first minute, 2 burpees the second minute,... and so on until you fail to complete the number designated for the minute you are on.
(Advanced)
With a continously running clock, do 1 clean and jerk the first minute, 2 clean and jerks the second minute,... and so on until you fail to complete the number designated for the minute you are on.