Muscles can be peeled back with a precision mastered by few biology novices.
In addition, connective tissue in muscles can be damaged and needs time to recover.
For example, a big protein like myoglobin, the iron-bearing pigment in muscles, can be made by any one of many millions of different amino acid sequences.
In an era in which constant access to the Internet and its avalanche of indexed information is expected, exercising our recall muscles can be downright exhilarating.
Muscle weakness in the shoulder, arm, and hand also result from plexus compression; atrophy of the hand muscles can be quite pronounced.
Rib-cage muscles can be nagging and persistent, and the Yankees' bullpen is already short-handed because of Mariano Rivera's season-ending knee injury.
With electricity pulsing through his legs - via electrodes placed on his quadriceps and hamstrings - his muscles can be made to contract and he can, in effect, pedal 10 miles on an exercise bike in an hour.
Potential investors in One Blackfriars, for example, are assured that "tired muscles can be soothed with a visit to the in-house spa … The private screening room and wine-tasting areas offer further distraction".
This may explain why therapeutic manipulations of head muscles can be beneficial in primary headaches.
Dysfunction of the scapular muscles can be a potential cause of rotator cuff tears.
As a result, these muscles can be densely attached in the robot.
