How many reps of the weighted dead bug should you do when you are new to the exercise?

Keep it to 3 sets of 6 to 8 reps per leg with a light dumbbell in each hand, since the overhead load is what makes this an intermediate move, not the leg count. Only progress to adding the opposite-arm lower, reaching the dumbbell back overhead as the opposite leg extends, once 8 reps per leg feel completely stable.

What can I do instead of the weighted dead bug if I don't have dumbbells?

A light medicine ball or a filled water bottle held overhead gives a similar anti-extension challenge. With no weight at all, the plain dead bug trains the identical pattern, just with the intensity dialed down.

What is the weighted dead bug good for and when should you drop the weight?

Adding load overhead builds deeper anti-extension strength than the bodyweight version, useful for lifters who want core stability that holds up under real load, like a heavy overhead press or squat. Drop the weight if your low back lifts off the floor at any point in the set; that means the load has outrun your current control.

Intermediate

Weighted Dead Bug

The classic dead bug teaches you to keep the lower back flat while the limbs move; adding weight in the hands makes the core fight much harder to stop the ribcage from flaring and the spine from arching. It is a joint-friendly way to build the deep anti-extension strength that protects the lower back under load. Every rep should keep the lumbar spine pinned to the floor.

Equipment: Dumbbell
Body part: Abs
Type: Functional, Strength
Browse by muscle: Lower Rectus Abdominals, Upper Rectus Abdominals, Abdominal External Oblique
Browse by movement: Core Brace

How to do it

1
Lie on your back and press a dumbbell up over each shoulder with straight arms.
2
Lift the knees to a ninety-degree tabletop position over the hips.
3
Flatten the lower back into the floor and brace the abs.
4
Slowly extend one leg out straight while keeping the weights steady overhead.
5
Return the leg to tabletop, then repeat with the other leg.
6
Move at a controlled pace and keep the low back glued down.

Tips

If the lower back lifts off the floor, shorten how far you extend the leg.
Keep the dumbbells locked out and still; do not let them drift or wobble.
Exhale as the leg reaches out to help hold the ribcage down.
Add the opposite-arm lower once you own the leg-only version.

Variations

Common mistakes

The dumbbells wander out over the face or drift wide to the sides as the shoulders fatigue, instead of staying stacked directly over them.
Choosing dumbbells heavy enough to shake overhead adds instability the core then has to fight instead of focusing on the leg extension.
The lower back lifts off the floor on the last few reps of the set as fatigue creeps in, even though the first reps looked clean.
Some lifters add the opposite-arm lower before the leg-only version is fully controlled, doubling the difficulty before the base pattern is solid.
The elbows bend slightly to rest the load instead of staying locked, which turns steady overhead tension into an unstable wobble.

Frequently asked

How many reps of the weighted dead bug should you do when you are new to the exercise?: Keep it to 3 sets of 6 to 8 reps per leg with a light dumbbell in each hand, since the overhead load is what makes this an intermediate move, not the leg count. Only progress to adding the opposite-arm lower, reaching the dumbbell back overhead as the opposite leg extends, once 8 reps per leg feel completely stable.
What can I do instead of the weighted dead bug if I don't have dumbbells?: A light medicine ball or a filled water bottle held overhead gives a similar anti-extension challenge. With no weight at all, the plain dead bug trains the identical pattern, just with the intensity dialed down.
What is the weighted dead bug good for and when should you drop the weight?: Adding load overhead builds deeper anti-extension strength than the bodyweight version, useful for lifters who want core stability that holds up under real load, like a heavy overhead press or squat. Drop the weight if your low back lifts off the floor at any point in the set; that means the load has outrun your current control.

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