Core and carries
Dead bug
Muscles worked: Abdominals · trunk control

How to do it
- Set up. Lie on your back with arms reaching upwards and hips and knees bent. Keep your ribs relaxed and your lower back controlled.
- Move. Slowly reach one arm overhead and extend the opposite leg, only as far as you can without arching your back.
- Finish. Return both limbs to the start, then change sides. Keep breathing, and make the movement smaller if you start to lose control.
Form cues
- Lie on your back, arms pointing at the ceiling, knees bent at 90 degrees above your hips.
- Gently press your lower back towards the floor.
- Slowly reach one arm overhead and straighten the opposite leg towards the floor.
- Only go as far as you can keep your back still.
- Breathe out as you reach, come back, then switch sides.
Muscles worked
The dead bug exercise works your deep stomach muscles and obliques, which keep your trunk still while your arms and legs move.
Easier and harder versions
Easier
- Move only your legs.
- Tap a heel to the floor with the knee still bent.
Harder
- Hold a light weight.
- Add a pause at full reach.
- Use a band.
Common mistakes
- Lower back arching off the floor.
- Moving fast.
- Holding your breath.
- Reaching too far too soon.
Where it appears in the member plans
Dead bugs are in both 12-Week Home Plans and nearly every other plan, from Beginner Reset to Walking & Hiking, usually as 3 sets of 8 slow reps a side.
Dead bug questions
What is the dead bug exercise good for?
It trains your stomach muscles to keep your trunk still while your arms and legs move, which is useful in plenty of other lifts.
How many reps should I do?
Two or three sets of 6 to 10 slow reps a side is a good start.
Dead bug or bird dog?
Both train trunk control. The dead bug is done on your back and the bird dog on all fours. Many plans use both.
Why does my back lift off the floor?
You’re probably reaching too far. Shorten the reach, breathe out as you move and only go as far as you can keep your lower back gently pressed down.
Try FitFitCity free for a week
Dead bugs are in the 12-week home plan. Try it free for a week.
Start with a free week of full member access: training plans, the workout log, the food diary and 225 recipes. No card needed.
After that, membership is £79 a year, or £9.99 a month on a 12-month minimum.
Start my free weekSee what’s inside