If you are preparing for a physical fitness test as a soldier, after doing 60% of the maximum number you can do in 2 minutes, practice by doing a total of 5 sets with the counts of 0 -2 -4 -2 0 from that number. For example, if you did 60 in 2 minutes, it would be 36, 34, 32, 34, 36 like this!