50 regular stationary sit ups
50 with legs up in the air, crossed at the ankles
50 with left knee crossed over right knee
50 with right knee crossed over left knee
150 bicycles (touch opposite elbow to opposite knee, and count each touch as "1")
50 butterflies (legs bent on floor with bottoms of feet touching)
50 with your legs straight out on the floor, touching the ground
50 overhead lifts with lower body on the ground.