Tricep extensions build strength in the triceps. This can aid in more difficult compound pushing exercises like bench press and overhead press.
Engaging the triceps involves an eccentric motion of the arm. Tricep extensions can be done with machines or weights. The standard version is done with a cable.
The variations of tricep extension target different parts of the tricep.
This variation has a similar arm movement. However, the position requires the arms to be above the head, and the person to face outwards from the cables.