Marines have complained for ages that the crunches portion on the Physical Fitness Test, or PFT, is too easy, administratively hard to judge and easy to cheat on.

Now the Corps is looking at planks as an alternative.

In a December briefing for the Defense Advisory Committee on Women in the Services, the Corps said its Force Fitness Division, led by former Marine athlete of the year Col. Stephen Armes, was conducting a study on the use of planks as an alternative to crunches.

“The Marine Corps Force Fitness Division is currently testing and analyzing the use of planking as a possible measure of abdominal strength for the annual Physical Fitness Testing,” Marine Corps Training and Education Command said in a statement. “Their testing remains ongoing.”

A plank is performed by holding the body in a tight formation, generally in a pushup-like position, and maintaining that form for a period of time. It is considered an isometric core exercise, as unlike crunches a plank does not involve contraction of the muscles during the workout.