Lying Triceps Extension (Skull Crushers)

How to do the Lying Triceps Extension (Skull Crushers)

To begin the skull crusher exercise, lie down on a bench and hold a barbell (or EZ curl bar) at arms length above your chest. Now, while keeping the upper arm rigid, slowly lower the bar until it is above your forehead. Reverse the movement to raise the bar.
Spotter Information:
A spotter can stand behind the individual and spot at the hands or bar.

These are the muscles , equipment and categories of this exercise.

  • PRIMARY: Triceps
  • Isolation
  • Barbell
  • EZ-Curl Bar
  • Upper Body

Averages for MyFit Users

The table below represents data from over 200,000 exercise logs and gives us an average for this exercise.

Average Weight LiftedAverage Reps One Rep Max Average
50.1 lbs12.5 66.4 lbs

What is a good starting weight?

Based on an average weight lifted of 50.1 lbs for all MyFit users we suggest you start at 50% of that weight:

Try 25 lbs and aim for 12-15 reps.


Workouts Plans with Lying Triceps Extension (Skull Crushers)

Purpose Type Level
Hypertrophy Advanced
Muscular Definition Beginner
Sport Specific Intermediate
Muscular Definition Intermediate
Strength Beginner
Muscular Definition Intermediate
Sport Specific Advanced

Make a Workout

Crafting a workout for the gym is extremely important. Consideration should be maintained throughout your designing process. If you just want to find one to use we offer plenty here. If you want to make your own you can start now.

Tracking Your Weights

There are lots of easy ways to track your sets and reps. One easy way is through a little book that you can take with you to the gym. This book has progress charts, workouts and lots of tools you can use to always make sure you are improving.