Dead Bug Core Control
dead bug core workout
3 rounds for quality
8-12 controlled Dead Bug reps
8 controlled Plank reps
Rest 45 sec without losing position
Bodyweight
Dead Bug Exercise — Core Bracing, Scaling & Beginner WODs
BB
By Borja Bes — CrossFit Athlete & Hyrox Finisher
The dead bug is one of the best entry-level core drills for learning how to brace the trunk while moving the limbs. That makes it especially valuable for beginners in CrossFit, because it teaches the same ribcage and pelvis control needed for hollow body positions, overhead pressing, and efficient lifting. It may look simple, but a strict dead bug quickly reveals whether an athlete can keep the lower back organised under movement.
Quick answer
The dead bug is one of the best entry-level core drills for learning how to brace the trunk while moving the limbs. Use Dead Bug for controlled trunk work and end the set before the lower back or pelvis loses its intended position.
Curated demonstration
Watch Dead Bug Technique
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You're Doing Dead Bugs WRONG! Fix This for Stronger Abs & a Bulletproof Core
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Muscles Worked
Transverse abdominisRectus abdominisHip flexors
Equipment
None
Best For, Avoid If, and Scaling
| Best for | Dead Bug trunk-control work for transverse abdominis and rectus abdominis that supports lifting, gymnastics and posture without relying on fast, loose repetitions. |
|---|---|
| Avoid if | Avoid or scale Dead Bug if pain changes the movement or the intended position cannot be controlled. Correct this common fault before adding volume: letting the lower back arch as the leg extends. |
| Scaling | Shorter limb range, arms only, or legs only. |
How to Do the Dead Bug
1
Lie on your back with arms straight up and knees bent to 90 degrees.
2
Press the lower back gently into the floor.
3
Extend one arm and the opposite leg slowly away from the body.
4
Return to the start and alternate sides without losing trunk position.
Common Mistakes
✕
Letting the lower back arch as the leg extends.
✕
Moving too fast and turning the drill into momentum.
✕
Shrugging the shoulders instead of keeping the ribs organised.
Coaching Tips
✓
Only move as far as you can while keeping the lower back controlled.
✓
Exhale as the leg reaches long to reinforce trunk bracing.
Scaling Options
Easier / Beginner
Shorter limb range, arms only, or legs only.
Harder / Advanced
Longer range, tempo reps, or light external load in the hands.
Training Examples
Train Dead Bug with a Clear Purpose
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Dead Bug Trunk Finisher
dead bug finisher
Every 90 sec x 5 rounds
8-12 controlled Dead Bug reps
20 sec easy breathing reset
Stop before the lower back compensates
Frequently Asked Questions
Why include dead bugs in a CrossFit glossary?
Because they teach the trunk control beginners need before harder gymnastics core drills. They are one of the cleanest ways to learn anti-extension mechanics.
What is a good beginner core WOD with dead bugs?
Try EMOM 12: minute 1, 8 dead bugs per side; minute 2, 30-second plank; minute 3, 12 air squats. Move slowly enough to keep the lower back controlled.
Should dead bugs feel hard?
Yes, but not chaotic. If the lower back arches or the ribs flare, shorten the range of motion until you can brace cleanly.
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Useful next steps
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