deltoid
Lactate is the most likely cause of the burning you feel in overworked muscles.
If you had to pick an answer which named three muscles, it would be MASSETER, PTERYGOID & TEMPORALIS.
ground tissue
There are several muscles involved in climbing stairs. Some of the most worked-on muscles are: gluteus maximus and the harmstrings. Additionally there are several more muscles involved located at the knees.
Abduction of the arm.
His abduction of Persephone.
the secretary of state
Quadriceps (thighs), Triceps (back of your arm) and abs (stomach muscles) are the three most important muscles involved in swimming, however a well rounded, athletic body in all areas is the best.
There were no abductions during the Roswell incident; however the most famous alien abduction case is the Betty and Barney Hill case of the late 60's.
Mechanical power
Flexion, abduction, external rotation
skeletal muscles