Recruit Kyle Schutter, Platoon 2134, Company F, 2nd Recruit Training Battalion, performs crunches during his final physical fitness test before graduating from boot camp, Dec. 23. Crunches are the second part of a three-part test that recruits take during boot camp, and annually once they become Marines. - Recruit Kyle Schutter, Platoon 2134, Company F, 2nd Recruit Training Battalion, performs crunches during his final physical fitness test before graduating from boot camp, Dec. 23. Crunches are the second part of a three-part test that recruits take during boot camp, and annually once they become Marines.