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While performing a hanging leg raise one of the intended actions of the primary muscle, the iliopsoas, is to flex the thigh and the trunk during the exercise. Other primary muscles include the rectus femoris, tensor fascia lata, and adductors.
it works your abs
trunk flexion lateral trunk flexion
it works your abs
legs extended = lower abs bias legs tucked in = upper abs bias so abs in general
Gastrocnemius muscle
The Zygomaticus is the primary muscle used in smiling.
The triceps muscle is the primary muscle used in a cable extension.
The primary muscle intended for exercise.
I think you are referring the pectoralis muscle, which is the primary muscle in your chest.
voluntary and involuntary
Calcium