# Bodyweight Skullcrusher

- Canonical: https://fitwill.app/exercise/8271/bodyweight-skullcrusher/
- Media ID: 8271
- Primary muscle: Triceps
- Body part: Upper Arms
- Equipment: Body Weight
- Video: https://fitwill.app/videos/8271/bodyweight-skullcrusher.mp4

## Description

The Bodyweight Skullcrusher is a floor-based pressing movement that isolates the triceps using nothing but your own body as resistance. You start in a plank position with straight arms, then lower your body forward by bending the elbows so your forearms glide down toward the floor — almost like an elbow-centric push-up — before driving back up to straight arms. The name comes from the barbell skullcrusher, because the elbow action is identical: the upper arms stay fixed while the forearms swing around the elbow joint. Here, your torso replaces the barbell as the load.

This exercise is especially useful for people who train at home or want to load the triceps without dumbbells, bands, or cables. Because the resistance comes from your bodyweight angled over your wrists, it can be scaled easily — walking your feet further back makes it harder, while keeping them closer or dropping to your knees makes it easier. It also demands more shoulder and core stability than a machine skullcrusher, since nothing supports your torso except your own bracing.

The main target is the triceps brachii, all three heads, which work to extend the elbows under load. The chest and front delts assist as you press back up, and the abs, glutes, and legs hold a rigid plank line throughout. The long head of the triceps gets particular attention because the shoulder position slightly stretches that head as the body travels forward over the hands.

Setup quality decides everything here. Your hands should be planted roughly shoulder-width under or slightly in front of your shoulders, fingers spread, with the ground contact firm. If your hands drift too wide or your elbows flare out, the elbows and wrists take unnecessary strain and the triceps lose tension. Keep the elbows tracking close to the ribs and pointing back toward your feet as you lower.

To execute well, think of the movement as two phases: a controlled forward dive where the forearms approach the floor as one piece, and a strong press where you extend the elbows to slide your body back up and over your hands. The body should stay in one straight plank line from head to heels — no sagging hips, no piking. Move slowly enough that your forearms touch down softly rather than crashing.

You will see this movement in home triceps programs, calisthenics prep work, and as a finisher after pressing days. It pairs naturally with push-ups: push-ups tax the chest while this variation shifts the workload onto the elbows. If your wrists complain during floor pressing, an exercise mat or push-up handles can make the setup friendlier, but start with strict form before adding any hardware.

## Instructions

1. Kneel on an exercise mat and place your hands on the floor about shoulder-width apart, fingers pointing forward, directly under or slightly ahead of your shoulders.
2. Step your feet back into a full plank so your body forms one straight line from head to heels, arms fully extended and legs engaged.
3. Brace your abs and squeeze your glutes to lock the plank position before any movement begins.
4. Bend your elbows and let your body travel forward and down at the same time, keeping the elbows close to your ribs and pointing back toward your feet.
5. Lower until your forearms rest on or nearly touch the floor, with your head and chest arriving just past your hands.
6. Press through your palms and extend your elbows forcefully to slide your body back up and over your hands until your arms are straight again.
7. Exhale as you press up and inhale as you lower forward.
8. Keep your hips level throughout — do not let them sag or lift as the body moves forward and back.
9. Reset your plank tension at the top of each rep, then repeat for your target reps.

## Tips & Tricks

- If your forearms slam into the floor, the reps are too fast — slow the lowering phase to two or three seconds so the triceps control the descent.
- Elbows flaring out to the sides is the most common fault; cue yourself to keep them brushing past your ribs so the triceps, not the shoulder joints, do the work.
- Make it easier by bending your knees and resting them on the mat, which shortens the lever and reduces the load on your elbows.
- Make it harder by walking your feet further back, which increases the percentage of bodyweight pressing through your arms.
- If your wrists hurt at the top, spread your fingers wider and grip the floor, or use push-up handles to keep the wrists neutral.
- Do not let your shoulders shrug up around your ears; press the floor away and keep the space between your shoulders and neck.
- A sagging lower back usually means core fatigue — shorten the set rather than letting your hips drop, since that shifts work away from the triceps.
- Think about pulling your body forward under an imaginary bar as you lower; this forward angle is what makes the movement a skullcrusher rather than a push-up.

## Frequently Asked Questions

### What muscles does the Bodyweight Skullcrusher work?

The triceps brachii are the primary movers, extending the elbows under the load of your bodyweight. The chest and front delts assist the press, and the core works isometrically to hold the plank line.

### Is the Bodyweight Skullcrusher good for beginners?

Yes, as long as you scale it. Starting from the knees or keeping the feet close to your hands reduces the load, and you can build up to the full plank version as your triceps and core get stronger.

### Why do my elbows flare out during the Bodyweight Skullcrusher?

Flaring usually happens when the triceps are fatigued or the hands are set too wide. Narrow your hand position slightly and consciously keep the elbows tracking back toward your hips throughout each rep.

### How is the Bodyweight Skullcrusher different from a push-up?

In a push-up the elbows move back and the chest lowers between the hands; here the body travels forward over fixed hands so the forearms approach the floor. This pins the upper arms and turns the movement into an elbow extension, shifting the emphasis to the triceps.

### Can I do the Bodyweight Skullcrusher without a mat?

You can, but bare forearms and wrists on a hard floor can be uncomfortable, especially at the bottom position. An exercise mat or a soft surface makes the exercise easier to perform consistently.

### How can I make the Bodyweight Skullcrusher harder?

Walk your feet further back so more of your bodyweight sits over your hands, slow down the lowering phase, or add a pause with the forearms just off the floor before pressing back up.

### What should I do if my wrists bother me during this exercise?

Spread your fingers and actively grip the floor to share the load across the whole hand, and check that your hands sit under your shoulders rather than far in front. Push-up handles that keep the wrists straight are a solid workaround.

### Can the Bodyweight Skullcrusher replace dumbbell or barbell skullcrushers?

It trains the same elbow extension pattern, so it is a strong substitute when you have no equipment. The main difference is that the resistance curve depends on your body angle, so precise loading is harder to fine-tune than with a weighted version.

### How many reps should I do of the Bodyweight Skullcrusher?

Because the load is fixed at a portion of your bodyweight, work in the 8 to 15 rep range and adjust your foot position so the last few reps are challenging but controlled.