Smith Bar Bodyweight Triceps Extension

Also known as: bodyweight skull crusher

In SetGrip: Bodyweight Triceps Extension (Smith Bar)

Secondary muscles
Delts
Body part
Upper Arms
Position
Standing
Laterality
Bilateral (both sides together)
Category
Strength

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Set a Smith bar around hip height, grip it at arm's length, and lower your forehead toward it: bodyweight is the resistance, and the higher the bar, the easier the rep. That adjustability lets you scale a set mid-stream just by moving the bar or your feet, making it a rare triceps movement that needs no plates at all.

How to do the Smith Bar Bodyweight Triceps Extension

  1. Stand with your feet shoulder-width apart and your knees slightly bent.
  2. Extend your arms straight out in front of you, parallel to the ground.
  3. Bend your elbows and lower your body towards the ground, keeping your upper arms close to your sides.
  4. Pause for a moment at the bottom, then push yourself back up to the starting position.
  5. Repeat for the desired number of repetitions.

Tip: Squeeze the bar hard and keep the wrists straight over the elbows through the whole rep.

Muscles worked

Primary

Triceps · Arms

The triceps lock out the elbow on every press and dominate close grip and skull press variations.

Secondary

  • Delts — The front delts assist every press and take over on Bradford and behind the neck variations.

Common mistakes

  • Elbows flaring wide — on horizontal presses keep the elbows at roughly 45 degrees from the torso; pressing overhead, keep them under the weight instead.
  • Losing the shoulder blade position — on bench-style presses set the shoulder blades back and down and keep them there; overhead, let the shoulder blades rotate up naturally with the arms.
  • Bouncing or rushing the bottom — control the bar down and pause for a beat before driving up, especially on decline and close grip variations.
  • Not committing to a variation — Bradford presses, skull presses and the like are hybrids; pick a fixed range and stick with it for the whole set.

Where it fits in a workout

Presses are the main movement in a push session and should go first or second. Superset them with a row or pulldown for a push and pull pair.

How many sets, how heavy and how hard: see what the ACSM position stands support.

Variations and alternatives

Similar exercises

Without bodyweight

Easier and harder

When to talk to someone

  • Chest discomfort, feeling faint or lightheaded, or trouble breathing during or after exercise can be signs of a heart attack. In the US, call 911 right away; elsewhere, call your local emergency number.
  • Heart, metabolic or kidney disease, or symptoms like these when you are active: talk to your doctor before you start or step up training.
  • Pregnant: ask your obstetric care provider which exercise suits you.

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More exercises

Sources

  1. ACSM position stand on exercise quantity and quality (Garber et al., 2011)
  2. ACSM preparticipation health screening (Riebe et al., 2015)
  3. ACOG Committee Opinion No. 804 on exercise in pregnancy (2020)
  4. CDC: About Heart Attack Symptoms, Risk, and Recovery (2024)

Sources checked on October 17, 2026. Full citations are in the exercise library.

Animation and exercise data: ExerciseDB, licensed to SetGrip. General information, not medical or coaching advice.