How to Do the Dead Bug Exercise to Strengthen the Core

The Dead Bug is one of the most effective exercises for strengthening the core without putting strain on your back. Unlike classic abdominal exercises, this movement works the rectus abdominis, improves lumbar stability, corrects posture and helps prevent injuries.

I always recommend it to both beginners and advanced professionals. Why? Because of its ability to adapt to any level. Take note of the step-by-step guide to achieve perfect technique:

1. Lie on your back and raise your legs with your knees bent at 90°. Extend your arms pointing towards the ceiling with your fingertips, aligned with your shoulders.
2. Press your lower back into the floor (imagine you want to flatten a coin). Remember to maintain this contraction throughout the entire exercise.
3. Slowly lower your right leg (almost straight, without touching the floor) and your left arm backwards. Inhale during this step.
4. Exhale as you return to the starting position. Repeat, alternating sides.

Muscles Worked in the Dead Bug Exercise

Recommended Sets and Repetitions

Dead Bug Variations to Adapt the Exercise to Your Level

Here are a few Dead Bug variations so you can find the one that best suits your fitness level and your training routine:

1 Dead Bug with a Resistance Band

1. Sit on the floor and place a resistance band around the soles of your feet.
2. Hold the ends of the band with your hands, keeping your elbows slightly bent.
3. Lie on your back and inhale as you lift your legs with your knees at 90° (as in the classic Dead Bug).
4. Make sure the band is under tension, but not pulling excessively.
5. Exhale as you lower your right leg (almost straight) and your left arm backwards, maintaining tension in the band.
   Slowly return to the starting position as you exhale and alternate sides.

💡 HSN recommendation: use bands with 7–10 kg of resistance to balance effort and control.

2 Unilateral Dead Bug

1. Lie on your back and raise both legs with your knees bent at 90°.
2. Extend your arms towards the ceiling.
3. Lower only your right leg towards the floor (keep your left leg bent at 90°).
4. At the same time, move your left arm backwards, without arching your back.
5. Exhale as you lower your right leg towards the floor and move your left arm backwards.
6. Inhale as you return to the starting position and repeat on the other side.

💡 HSN recommendation: if you lose stability, reduce the range of movement or place one hand on your abdomen to monitor core contraction.

3 Dead Bug with a Ball

1. Hold a ball with both hands, keeping your arms extended towards the ceiling.
2. Lie on your back with your legs raised and your knees at 90°.
3. Lower your left arm backwards (as in the classic Dead Bug) while holding the ball with both hands.
4. Exhale as you lower your left arm backwards (without letting go of the ball). Inhale as you return to the starting position and alternate arms.

💡 HSN recommendation: use a ball with a diameter of 55–65 cm, which suits most heights.

4 Dead Bug with Hip Raise

1. Lie on your back with your legs raised, your knees bent at 90°, and your arms extended towards the ceiling.
2. Exhale as you lower the opposite leg and arm.
3. Inhale as you return to the starting position and exhale as you slightly lift your hips (contracting your glutes).
4. Keep your lower back in contact with the floor during the lift.

💡 HSN recommendation: if you feel pressure in your lower back, place a thin towel underneath it for support.

Mistakes That Can Be Made When Performing the Dead Bug Exercise

Bibliography

1. Kelvin N. King Jr. (2019) “6 Dead Bug variations for the weekend athlete”
2. Peter Fiasca, Ph. D (2010) “Descubriendo pilates clásico puro”
3. José María González Ravé and Christian Roberto López Rodriguez (2014) “Core training”
4. Abigail Ellworth (2017) “Anatomía & entrenamiento del core”

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