AAAI/ISMA Primary Aerobic and Group Fitness Instructor Certification Practice Test 2026 – Complete All-in-One Guide to Exam Success!

Face-down lying is called prone. In anatomical terms, prone means the body is horizontal with the face directed toward the ground, typically with the chest down and the back up. The opposite is supine, which is lying on the back with the face upward. Lying on the side is called lateral, and sitting means the person is upright. Knowing these terms helps you position someone correctly for exercises or assessments, and when you’re told to place someone in a prone position, you know their chest is toward the floor.