loosening all muscles

例句：

1. 1.She was so tired that she couldn't keep her eyes open.
   她太累了，睁不开眼睛。
2. 2.The tight rope walker must have been feeling the tension in his muscles.
   那个走钢丝的人一定感到了肌肉的紧张。
3. 3. After a long day of work, I felt my muscles relaxing.
   工作了一整天后，我感觉我的肌肉开始放松了。