Day 2:pull day ( back/traps/biceps)

Back muscles .
The large and small rhomboid muscles connect the scapulae to the spine (scapula stabilization). The greater rhomboid is involved in scapula movement (upward, forward, backward), the lesser rhomboid helps the scapula rotate. Muscle that straightens the spine (transverse spinous) - iliopsoas, longest, shortest muscles.

What are the biceps for?
The main functions of the biceps are: flexion of the shoulder and forearm, supination (outward rotation) of the forearm.