Exercise guide
Sledge Hammer
- Intermediate
- Compound
- Rep-based
- Back
- Chest
- Shoulders
- Upper arms
- Waist
A dynamic, full-body rotational exercise that mimics a sledgehammer swing to build explosive power and core strength without equipment. It targets the entire kinetic chain, emphasizing the obliques and posterior chain through high-velocity chopping motions.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Stand with feet wider than shoulder-width in a staggered stance, knees slightly bent.
- Clench your fists as if gripping a heavy handle, with one hand positioned higher than the other.
- Brace your core and fix your gaze on an imaginary target on the floor in front of you.
How to do it
- Reach both arms diagonally up and back over your shoulder, rotating your torso and extending your hips fully.
- Exhale sharply as you swing the imaginary hammer down toward the floor, hinging at the hips and driving your fists through a powerful arc.
- Inhale as you transition the 'hammer' across your body to the opposite shoulder in one fluid, controlled motion.
- Repeat the movement on the opposite side, maintaining a fast and rhythmic alternating pattern.
Form checklist
- Pivot the back foot as you swing to allow for full hip rotation and protect the knee joint.
- Engage your lats and abs to 'pull' the weight down rather than relying solely on arm strength.
- Keep a slight bend in the knees and maintain a flat back during the downward hinge phase.
- Stop the downward motion abruptly at hip level to maximize isometric core tension.
Pro tips
- Utilize 'dynamic tension' by imagining the weight of a 20lb hammer to increase muscular recruitment throughout the range of motion.
- Focus on the 'crunch' at the bottom of the swing to maximize oblique and rectus abdominis activation.
Make it harder
- Increase the tempo to a maximum effort sprint for 30-60 second intervals to boost metabolic demand.
- Incorporate a small explosive hop as you reach overhead to increase vertical power and glute engagement.
Frequently asked
- What muscles does the sledge hammer work?
- The sledge hammer primarily targets the biceps, deltoids, erector spinae, lats, pectorals, and triceps, and also works the abs, forearms, grip muscles, obliques, and serratus anterior as secondary muscles.
- What equipment do you need for the sledge hammer?
- The sledge hammer uses dumbbell.
- Is the sledge hammer good for beginners?
- The sledge hammer is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.
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