The tricep extension machine is a classic isolation exercise for the triceps. The fixed path helps you stay strict on form, which makes it a good choice when you want a simple, repeatable way to add volume for arm size and strength.
It targets the triceps with minimal involvement from the chest and shoulders compared with many pressing movements. Adjust the seat and pad height so your elbows sit comfortably at the hinge point; this reduces strain on the elbows and shoulders.
Use it as a finisher after compound presses or on an arm day when you want a focused triceps burn without balancing free weights.
Common questions about form, safety, equipment, and alternatives for this exercise.
Adjust the seat so your elbows line up with the machine pivot and your upper arms stay supported on the pads. If the setup feels too high or too low, change the seat before adding load.