AFAA Group Fitness Instructor Practice Test

Neutral spine means maintaining the spine's natural curves without letting them flatten into a straight line or collapse into a rounded position. It isn’t about making the spine perfectly straight; it’s about preserving the gentle curves through the cervical, thoracic, and lumbar regions so the spine stays stable and the core can brace effectively. This alignment helps distribute loads safely, protects the discs and joints, and supports safer lifting and movement. In practice, you cue the position by keeping the chest open, shoulders down and back, and the head aligned with the spine with a slight chin tuck. The pelvis should be positioned so the lower back maintains its natural curve rather than sagging into flattening or over-extending into hyperextension. If you’re not in neutral, you’ll typically see the spine either round (flexion) or arch excessively (hyperextension), which can increase stress and reduce stability.