Smith machine triceps extension

This might be the best triceps exercise I’ve ever done, courtesy of @hypertrophy coach:

The key in the setup of this exercise is understanding while this may look like a close grip bench press, it is NOT!
• I’m using pretty light weight for how strong I am, along with a resistance band looped under the bench because I need added resistance as I approach the top of the rep.

• The key to this exercise, other than the setup I just mentioned is to understand “you do not push the weight up”
Instead you think “slide the hands apart”
Now obviously you cannot slide the hands apart because you are gripping through bar.
However that intense motion of trying to slide the hands apart places a massive focus on the lateral head of the triceps. So think slide the hands apart with all the force you have on the way up, then as you lower the bar, again try to slide the hands apart with all the strength you have:

4 sets: 8-failure