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Flexor digitorum profundus
The soleus is the main plantar flexing muscle of the foot.
The best example is when you flex your arm to make the biceps look large. "Make muscle" it is sometimes called.
ATP is the source of chemical energy used to power a muscle cell in your arm.
flexing is tightening of your muscles, and joints bend to let you extend your arm from the elbow and shoulder
The muscle in your arm contracts. The muscle on the other side of your arm, opposite from the side that you are flexing, stretches.
Inn other words muscle flexing can be called muscle shortening and extension when muscle is elongating. For example when you bend you arm towards your shoulder your bicep muscle is shortening and you can feel a bump. When you extend your arm you can feel that the bump is stretching out and disappearing, that is muscle extension.
The triceps are the the large muscle at the back of the upper arm.
The muscle in your arm contracts. The muscle on the other side of your arm, opposite from the side that you are flexing, stretches.
There are three muscles involved in flexing your elbow. They connect your upper arm to your forearm. When they contract, they become shorter and pull your forearm toward your upper arm.
They are in your upper armNo. It's in your lower arm.
The function of the biceps brachii is to flex your arm at the elbow. However, even though that is the most visible muscle, the brachialis muscle is considered the prime mover in flexing at the elbow.
The way I do it is that I hold in between the two seems with closed fingers and crack your arm forward like make an L with your arm sticking up, raise your arm and crack forward. Also when you are doing it you flex your muscle and stop flexing it when you release the ball you stop flexing and you throw as hard as you possibly could. im 11 and with this technique i reach up to 60mph (96kph).
Flexing Your PC Muscle - 2013 was released on: USA: 1 January 2013 (Denver, Colorado)
Flexing your arm, and to some extent, rotating it.
It is called the Sartorius muscle located in the thigh. Here is the long definition. Assists in flexing, abduction and later rotation of the hip and flexing of the knee.
The biceps muscle relaxes!!!!!=)