BENEFITS 益处
Improves spinal articulation in flexion and rotation; enhances eccentric and concentric core control; strengthens shoulder girdle stability; improves coordination and proprioception.
改善脊椎分节屈曲与旋转的活动度；增强核心肌群的离心与向心控制；强化肩带稳定性；提高身体协调性与本体感觉。
TARGET MUSCLES 目标肌群
Abdominals (primary for roll up/down), internal and external obliques (primary rotation), shoulder girdle stabilizers (support), hip flexors (control leg position), spinal extensors (eccentric control).
腹肌（主导卷起与下放）、腹内斜肌与腹外斜肌（主导旋转）、肩带稳定肌群（维持支撑）、髋屈肌（控制腿位）、脊柱伸肌（离心控制）。
SETUP 设置
None. May place Spine Corrector or foam roller under pelvis for regression assistance.
无。可将脊椎矫正器或泡沫轴垫在骨盆下方作为降阶辅助。
CUES 口令
Starting position: Supine, legs lifted to tabletop. Arms by sides, palms down. Breathing/Movement: Extend legs toward ceiling. Exhale, initiate from tailbone, roll back onto shoulders until legs parallel to floor. Rotate trunk right, toes pointing toward right shoulder, keeping sit bones parallel to ceiling. Inhale, control roll down from right back, through right hip, along midline. Legs circle left, exhale to roll back up from left back. Finish back to tabletop. Repeat opposite direction. Imagery: Legs like a corkscrew spiral, circling smoothly; body on a track, only able to roll and rotate along midline.
起始位：仰卧，双腿抬起呈桌面姿势。手臂放于身体两侧，掌心向下。 呼吸与动作：将腿向天花板方向伸直。吐气，从尾骨开始向后卷起至肩支撑位置，双腿平行于地面。躯干向右旋转，使脚趾指向右肩上方，保持坐骨平行于天花板。吸气，从右侧背部开始，经右侧髋关节，沿着身体中线有控制地向下卷回。双腿顺势向左侧画圈，吐气时从左侧背部向后卷起。画圈结束回到起始桌面姿势。反方向重复。 想象提示：想象双腿像开瓶器的螺旋，平稳地画圈；身体像固定在滑轨上，只能沿着中线前后滚动和旋转。
IMAGERY 意象
Direct: Feel spine like a screw, rotating segmentally off and onto the mat. Indirect: Like a corkscrew, smoothly twisting in and out. Space: Imagine body wrapped in a transparent cylinder, only able to move along the central axis. Feeling: Focus on deep abdominal contraction and stable level pelvis.
直接：感受脊椎像螺丝一样旋转着逐节离开和落回垫面。间接：像开瓶器，平稳地旋入再旋出。空间：想象身体被一个透明的圆柱体包裹，只能在圆柱体内沿中轴运动。感觉：注意力放在腹肌的深度收缩和骨盆保持水平的稳定感上。
TACTILE CUES 触觉提示
1. Gently support sacrum with one hand, guide legs with other to direct circle and roll path. 2. During rotation, lightly place hands on pelvis, cue to stay level, avoid tilt. 3. During lowering, lightly touch lower back, guide segmental descent along midline.
1. 一手轻托练习者骶骨，一手轻扶其双腿，引导画圈和卷落的轨迹。2. 在旋转阶段，双手轻放在其骨盆两侧，提示保持水平，避免侧倾。3. 在回落时，手指轻触其下背部，引导沿中线逐节下落。
PROGRESSION 进阶
1. Increase or decrease circle range. 2. Perform multiple circles in same direction before switching.
1. 加大或减小画圈的幅度。2. 连续向同一方向绕圈多次后再换方向。
REGRESSION 退阶
1. Roll only partway (not to full shoulder support). 2. Place Spine Corrector or foam roller under pelvis to limit range and provide support. 3. Keep knees bent during circles.
1. 只做部分卷起（不完全到肩支撑位）。2. 将脊椎矫正器或泡沫轴垫在骨盆下方，限制卷起幅度并提供支撑。3. 保持膝盖弯曲完成画圈动作。
COMMON ERRORS 常见错误
Rolling too high causing excessive cervical flexion; trunk lateral flexion compensation; movement not following midline; lack of core control, body loose; loss of axial elongation.
卷起过多导致颈椎过度屈曲；躯干侧屈代偿；动作未沿身体中线进行；缺乏核心控制，身体松散；失去中轴延伸感。
PRECAUTIONS 注意事项
Avoid for hypertension, glaucoma, retinopathy; contraindicated for neck injury/discomfort, osteoporosis, acute disc herniation, severe GERD; caution during menstruation.
高血压、青光眼、视网膜病变患者避免；颈部受伤或不适、骨质疏松、椎间盘突出急性期、严重胃食道反流者禁忌；经期女性建议谨慎。