1. In addition, breathing during REM depends much more on the action of the diaphragm and much less on rib cage action. 另外，快速眼动期的呼吸活动更多地取决于横膈膜的反应活动，而胸腔的作用要小得多。
2. In addition, breathing during REM depends much more on the action of the diaphragm and much less on rib cage action. 另外，快速眼动期的呼吸活动更多地取决于横膈膜的反应活动，而胸腔的作用要小得多。
3. Movements of the rib cage for breathing are reduced during sleep, making the contractions of the diaphragm more important. 睡觉期间，胸腔所做的呼吸活动会减少，这使得横膈膜的收缩变得更加重要。
4. In breathing the chest muscles expand the rib cage and allow air to be sucked into the lungs. 呼吸时胸部肌肉使胸廓扩大让空气吸入肺部。
5. Good posture allows for greater expansion of the lower rib cage. 正确的姿势能使胸腔低处更好地扩展。
