What cues support safe activation of the deep abdominals during a reformer curl or trunk flexion?

What cues support safe activation of the deep abdominals during a reformer curl or trunk flexion?

• A. Hold your breath to brace the core.
• B. Draw the navel toward the spine, keep the spine lengthened, avoid crushing the ribcage, and exhale with controlled trunk flexion to engage the transverse abdominis.
• C. Jut the ribs forward to expand the chest.
• D. Contract the hip flexors to initiate movement.

Answer: (B)