rectus abdominis

• 

  Superman push-up

• 

  Bent-knee oblique v-up

• 

  Cable horizontal Pallof press

• 

  Side-lying biceps bodyweight curl

• 

  Hanging windshield wiper

• 

  Decline sit-up

• 

  High bird dog plank

• 

  Shoulder tap push-up

• 

  Weighted stability ball crunch

• 

  Captain’s chair leg raise

• 

  Machine seated crunch

• 

  Twisting crunch