As the name of this exercise implies, the concentration curl is all about
mental effort as it is muscle effort. To really get the most from this
exercise, you really have to contract your biceps throughout the entire range
of motion.
The amount of weight used is not as important as concentrating on moving the
weight from the starting postition to the ending position. It is very
important that you come down nice and slow on the descending phase of the
movement (coming down).
This is an isolation exercise that can be done standing up or on a bench. I
personally prefer a bench but it's all about personal preference.
Position for the concentration curl
1. Sit at the end of a flat bench. Rest one elbow on the inside of your
thigh and the non exercising hand on your free leg. Keep your feet flat on the
floor.
Execution of the concentration curl
1. Exercise one arm at a time. Holding a light dumbbell, curl the straight arm
upward slowly until your arm is at it’s flexed position. Slowly lower the
dumbbell back to the start position. Raise and repeat. Immediately after
training one arm, train the other in the same manner.