BENEFITS 益处
Strengthens abdominal strength and control; improves dynamic core stability during simultaneous limb movement; enhances breath-movement coordination; increases hip and shoulder flexibility.
强化腹肌力量与控制；提高核心在四肢同时运动中的动态稳定性；改善呼吸与动作的协调；增强髋关节和肩关节的灵活性。
TARGET MUSCLES 目标肌群
Rectus abdominis (maintain curl), transversus abdominis and internal obliques (core stability), hip flexors (iliopsoas, etc. control leg extension and return), shoulder girdle stabilizers (maintain arm position and movement), hip adductors (legs together).
腹直肌（维持卷起）、腹横肌与腹内斜肌（核心稳定）、髋屈肌（髂腰肌等控制腿的伸出与收回）、肩带稳定肌群（维持手臂位置与动作）、大腿内收肌（双腿并拢）。
SETUP 设置
None.
无特殊器械调节。
CUES 口令
Starting position: Supine, hands holding just below knees. Curl head, neck, shoulders off mat, maintaining chest lift. Legs in tabletop (shins parallel to floor). Slight posterior pelvic tilt may help lumbar contact. Breathing/Movement: Inhale, gently press shins into hands to deepen thoracic curl. Exhale, maintaining curl height, simultaneously extend arms overhead and legs together to 45° or lower, abdominals strongly engaged. Inhale, circle arms out and back in, drawing knees toward chest, hands return to shins. Repeat 4-6x. May switch breath pattern (extend on inhale, return on exhale). Imagery: Body like a star contracting and exploding, core as center, limbs as radiating light; during extension, imagine limbs pulled to edge of universe, core more condensed.
起始位：仰卧，双手抓握在膝盖下方一点的位置。头、颈、肩依次卷起离开垫子，保持胸部抬起的位置。双腿呈桌面姿势（胫骨平行于地面）。骨盆可微微后倾以帮助腰椎贴地。 呼吸与动作：吸气，用胫骨轻柔地推向双手，帮助胸椎屈曲更多。吐气，保持躯干卷起高度，手臂和双腿同时向远方伸展出去（手臂伸向耳侧，双腿并拢伸向45度角或更低），腹肌强烈收紧。吸气，双手从两侧画圈收回，同时双膝收向胸口，双手再次抓住胫骨。重复4-6次。可交换呼吸模式（伸展时吸气，收回时吐气）。 想象提示：想象身体像一颗收缩又爆发的恒星，核心是中心，四肢是向外辐射的光芒；伸展时，想象四肢被拉向宇宙尽头，核心却更加凝聚。
IMAGERY 意象
Direct: Feel abdominals working intensely throughout, supporting limb opening and closing. Indirect: Like a breathing star, core condensed, light (limbs) radiating out and returning. Space: Imagine trunk fixed in a V-shaped groove, only limbs moving freely in space. Feeling: Focus on sustained lower abdominal engagement and the smooth rhythm of limbs reaching out and drawing in.
直接：感受腹肌从始至终的强烈工作，支撑着四肢的开合。间接：像一颗呼吸的恒星，核心凝聚，光芒（四肢）向外绽放又收回。空间：想象躯干被固定在V形槽中，只有四肢可以在空间中自由移动。感觉：注意力放在下腹部持续的收紧感，以及四肢向远延伸和向心收回的流畅节奏上。
TACTILE CUES 触觉提示
1. Gently support back of head, lightly touch lower abdomen, cue gentle press and abdominal engagement. 2. Lightly place hands on pelvis, cue to stay stable, avoid rocking. 3. During extension, lightly touch heels and fingertips, guide to reach long. 4. During return, lightly touch hands, guide circling path.
1. 一手轻托练习者后脑勺，一手轻触其下腹部，引导“头手轻推”和“腹肌收紧”的感觉。2. 双手轻放在其骨盆两侧，提示保持稳定，避免晃动。3. 在伸展时，轻触其脚跟和指尖，引导向远延伸。4. 在收回时，轻触其双手，引导画圈轨迹。
PROGRESSION 进阶
1. Extend only one arm and one leg at a time (same or opposite sides). 2. Extend limbs toward ceiling first, then lower to 45°. 3. Increase tempo while maintaining control.
1. 每次只伸展单侧手臂和腿（同侧或对侧）。2. 手臂和腿先向天花板延伸，然后再降低至45度。3. 加快动作节奏，同时保持控制。
REGRESSION 退阶
1. Reduce extension range (legs higher, arms shorter). 2. Extend only one limb at a time, keeping other bent. 3. Keep head on mat, perform only limb movements. 4. Maintain greater knee bend to shorten lever.
1. 减小伸展幅度（腿伸得更高，手伸得更短）。2. 每次只伸展单侧手臂和腿，另一侧保持弯曲。3. 头部不抬起，枕在垫上，仅做四肢动作。4. 保持膝盖弯曲角度更大，缩短力臂。
COMMON ERRORS 常见错误
Pulling knees too forcefully toward chest (causing pelvic rock); poor head/neck alignment (chin moving); losing chest lift height; scapular elevation; lumbar arching off mat; anterior pelvic tilt; abdominal bulging; extended legs limp.
过度用力将膝盖拉向胸口（导致骨盆晃动）；头部和颈部排列不良（下巴乱动）；未能保持胸部抬起的高度；肩胛上提；腰椎反弓离地；骨盆前倾；腹部突起；伸出的腿懒散无力。
PRECAUTIONS 注意事项
Caution for cervical spine conditions, acute lumbar disc herniation; use regressions (head on mat, legs higher). For hypertension, avoid breath holding.
颈椎病、腰椎间盘突出急性期者慎做，或采用头枕地、腿抬高角度的降阶版本。高血压患者注意避免憋气。