Single Arm Tricep Pushdown Machine

The single arm tricep pushdown on a machine with an arm pad removes the one variable that ruins most triceps work: the upper arm moving. With the arm resting on the pad and the elbow set at a right angle, the shoulder is locked out of the movement entirely, so extending the arm can only be done by the triceps. That constraint is what the machine sells, and it makes the exercise unusually easy to perform well even when you are tired at the end of a session. Working one arm at a time doubles the time the exercise takes and returns two things for it: you can see and correct the strength difference between sides, and you can give the working arm full attention through a controlled lowering phase, which is where the triceps takes most of its stimulus.