Dead Bug

Which muscles does it train?

Equipment needed

How to perform it

Time under tension matters more than load here: 3 to 4 sets of 8 to 15 reps, or holds of 20 to 60 seconds, with 45 to 90 seconds of rest.

Execution and technique cues

• Lie on your back with hips and knees bent to 90 degrees and arms reaching straight toward the ceiling, actively pressing the lower back into the floor.
• Exhale fully and brace the core to flatten the lumbar spine against the floor before moving any limb.
• Simultaneously lower the opposite arm and leg in a slow, controlled arc toward the floor without allowing the lower back to rise or the lumbar arch to increase.
• Return slowly to the starting position and repeat on the other side, keeping the movement deliberate and the torso completely still throughout.

Common mistakes

• Allowing the lower back to peel off the floor as the arm and leg lower, which indicates the core is not maintaining stabilization.
• Rushing through the movement and using momentum instead of the slow, controlled tempo that keeps the core under continuous tension.
• Holding the breath rather than exhaling through the movement, which bypasses the intra-abdominal pressure mechanism that is central to the exercise.

Frequently asked questions

What exactly does the Dead Bug train?

The Dead Bug trains the core's ability to maintain a neutral lumbar spine while the limbs move under load. It activates the deep stabilizers (transversus abdominis, multifidus) as well as the iliopsoas and rectus abdominis.

How can I make the Dead Bug more challenging?

Progressive options include fully extending the lowering leg to just above the floor instead of keeping it bent, holding a dumbbell in the extended hand, or adding a resistance band looped between the hands and feet. Always prioritize clean execution before increasing difficulty.

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