As many rounds in 10 minutes:

10 push ups

15 sit ups

Coach’s notes:  This one seems simple but performed at high speed and correct form, it is a true mid line test for endurance.  Ensure tummy stays tight, no sagging at belly, chest to deck.  Keep same push up position for entire workout to keep power high; i.e. if you choose to go from knees, do it from the start, same from toes, it will be a good measure for future reference.  Post rounds completed and comments on mid line stability.