11.   ...areas where muscles are underused and underdeveloped.

12.   My calf muscles are really tense.

13.   My stomach muscles are tight.

14.   Her throat hurt, the muscles were so tight.

15.   He has to avoid doing damage to parts of the body where there is no muscle.

16.   All my muscles were in trauma.

17.   My muscles were in trauma and I was trying to get away.

18.   Although Tools was gaining weight, he continued to be malnourished and his muscles were weak from the heart disease before the implant.

19.   Although the injury has been officially described as a bruising of rib cartilage, Messier said Monday that the muscles may also be involved.

20.   And fast muscles are less efficient than slower ones.