Skip to main content

How to do skull crushers the right way: The do’s and don’ts you need to know

The do's and don'ts of skull crushers

Man doing skull crushers.
lawcain / Adobe Stock

Skull crushers is an intriguing name for an exercise. But do not worry; it is doable. Skull crushers focus on developing your triceps, which are the muscles located on the back of your arm and have three attachment points at one end. 

Keep reading to discover valuable information about the exercise, such as how to do skull crushers, its benefits, and the recommended frequency. It is time to dive in. 

Recommended Videos

What are the benefits of skull crushers?

Man doing skull crushers.
Mdv Edwards / Adobe Stock

Skull crushers help you to utilize the triceps’ primary function, which is to extend the elbow. This can significantly add mass to your triceps and make them stronger. 

A study has shown that targeted tricep exercises can increase bench press strength, and skull crushers are one such exercise. In other words, stronger triceps will help you do other exercises like the bench press with ease.

Additionally, skull crushers activate the medial head of the triceps. These muscles extend the elbows, which improves force production for throwing muscles like the serratus anterior, rhomboid minor and major, and scapula. This can impact activities like football, baseball, and other sports that involve throwing. 

How to perform skull crushers

Man doing skull crushers.
click_and_photo / Adobe Stock

There are different variations to skull crushers, but this guide will cover the most common variation and everything you need to know to do it correctly. 

  • To get started, you will need a flat gym bench and a good dumbbell of your preferred weight; ensure you do not exceed your limit. 
  • Lie on your back with each leg on either side of the bench or rested on the footrest; make sure you are comfortable in this position. 
  • Get into your starting position by holding the dumbbell with both hands, then lift it above your chest; place your fists vertically. 
  • Move your hands towards the back of your head, ensuring you are holding on firmly to the dumbbells. To do this, you will bend your elbows while keeping your upper arms straight and at a right angle to your body. 
  • Move your hands further down and lower the dumbbell behind your head until its top aligns with the edge of the bench.
  • Hold that position for a few seconds before bringing it back up to the starting position by reversing your movement. 
  • Repeat the process for 2 to 4 sets of 8 to 10 reps.

Things to avoid when doing skull crushers

Woman doing dumbbell tricep exercise.
dusanpetkovic1 / Adobe Stock

Uncontrolled descent

Learn to control your dumbbells while descending. Slowing down the movement can increase the stimulation of your triceps and shoulders. So, do not rush to take them behind your head or bring them back up to help you prevent injuries. 

Bad form

The perfect form for skull crushers is to keep your elbows and wrists not too close or far apart — they should be shoulder-width apart. Also, do not let your elbows flare out, as this can lead to shoulder injuries and diminish the effectiveness of your exercise.

Lack of moderation

You should avoid going too heavy or too light when doing skull crushers. Reps between 10 and 20 are okay; doing less may not get you the desired results, and doing too much may cause injuries and muscle fatigue. Also, do not use a dumbbell that is too light or heavy. 

Descent sequence

There are two ways to begin the skull crusher movement: You can move your hands backward and then start bending your elbows, or you can bend your elbows first and then move your hands backward. To avoid mistakes, you should follow these methods.  

How often should you do skull crushers for results?

Man doing skull crushers.
Mdv Edwards / Adobe Stock

For best results, add skull crushers to your exercise routine. If you are looking to build strength, you can do fewer reps with heavier weight, but if you want to build muscle endurance, you can try more reps with lighter weight.

However, regardless of what you are trying to achieve and your routine, keep in mind that you need to be consistent to get good results.

Topics
Christine VanDoren
Christine is a certified personal trainer and nutritionist with an undergraduate degree from Missouri State University. Her…
New research reveals you can burn more calories during exercise by doing this
This interesting study shows how you can get closer to your goals and torch more calories
Man on treadmill with sleeveless shirt in gym

No matter your goals, if you want to burn more calories, you might think you have to exercise more intensely or frequently or for longer durations without stopping. New research reveals that there are other ways to burn more calories during exercise that don’t involve bringing yourself to the height of exhaustion or physical burnout. Let’s look at the study to discover how to ramp up calorie-burning. 
The study

In this hot-off-the-press small study published in the Proceedings of the Royal Society B, the researchers measured the metabolic demands and the level of oxygen consumed by the participants when exercising for intervals of 10 seconds to four minutes. The participants used a treadmill and a stair climber and exercised at three different speeds.
The study results

Read more
How to do the back squat: Your complete guide
Master your form and build muscle with this powerlifter favorite
Man doing a squat with barbell wearing gray shorts

Are you looking to add some strength training to your lower body workout? Consider adding the back squat to your routine.

The back squat is a reasonably advanced compound exercise that activates muscle groups in your lower body. While back squats might not be for everyone, they are a foundational strength training exercise that can yield big gains if you can master your form. From boosting testosterone to building muscle mass, there are many reasons to include back squats in your workout routine. Here’s a guide on how to do the back squat and the benefits this exercise will bring to your overall fitness level.
What are the benefits of back squats?

Read more
How to do dumbbell rows: Form, tips, variations, and more
Here's why you should add this back-building exercise to your upper body training day
Oone-arm dumbbell row in a bent-over position with emphasis on the leg by an athlete in shorts and a T-shirt

Dumbbell rows should be on your upper body workout list when you want to see serious back-building results. It’s important you master your technique to see optimal muscle growth. Dumbbell rows increase your pulling power to offset the focus on pushing exercises like push-ups or the bench press. You’ll enhance your athletic performance and your ability to perform your simple everyday functional tasks, especially those involving pulling, like pulling open a door or pulling the bed covers on. This guide covers the benefits, the most common mistakes, tips, variations, how to improve your technique, and more so you can conquer the dumbbell row.
What is the dumbbell row?

The dumbbell row is a classic pulling exercise that hits the larger muscles of your back as well as your arms. You bend forward at your hip, holding a weight in one hand hanging toward the ground. You row or pull the weight upward toward your torso before lowering it back down to the starting position. You can perform this exercise with or without a bench.
What muscles does the dumbbell row work?

Read more