This exercise is designed to work the rear delts and
upper back.
To begin, grab a pair of dumbbells and
sit on the edge of a bench. Start the
movement by
pulling your shoulder blades up and back
from there
clean the dumbbells up to a 90% flexion
of the
elbows
Remain in an upright position, don't rock
your upper body bringing your lower back
into the
movement.