The Standing Torso Twist — Contraindicated Stretch

The Standing Torso Twist (with or without weights) is one of the contraindicated ("X-Rated") movements, illustrated in the source crossed out with a large "X" (a standing figure holding a barbell across the shoulders, twisting the torso). Its specific risks are:

• Can strain the ligaments of the knee
• Uses momentum that often exceeds the absorbing capacity of the tissues being stretched

Note that in the FSU exercise checklist, machine trunk/torso twists are permitted (e.g., Cybex / Paramount Rotary Torso) but free bars are explicitly "No Bars Allowed!" for trunk twists — consistent with this caution about loaded standing twisting.

• Can strain the knee ligaments.
• Relies on momentum that often exceeds the tissues' absorbing capacity.
• Free bars are not allowed for trunk twists in the facility guidance.

• x-rated-exercises-overview — one of the eight "X-Rated" stretches.
• momentum — momentum increases injury risk and reduces target-muscle stimulus.
• spine-rom — spinal rotation is very limited in the lumbar region.
• knee-joint-rom — knee ligaments strained by the twist.