Dead Bug
Lie on your back and lower opposite arm and leg while keeping the spine braced flat.
Overview
Dead Bug is a beginner core stability exercise on Flexor that lowers opposite arm and leg while the lower back stays braced to the floor.
What Dead Bug targets
You'll feel the deep abdominals and hip flexors working to prevent the lower back from arching as the limbs move.
Why add Dead Bug to your routine
Trains anti-extension core control with arm and leg movement.
- Builds coordination between opposite limbs while the spine stays stable.
- A low-load entry point for bracing before planks and loaded lifts.
Who it's for
Beginners, post-rehab users, and anyone learning to brace before harder core work.
When to do it
Use in warm-ups, core circuits, or before squats and deadlifts.
Dead Bug is a core stability drill performed supine with knees at 90 degrees. Brace the core to keep the lower back on the floor, then slowly lower the opposite arm and leg without letting the back arch.
Setup cue
Lie on your back with knees bent to 90 degrees and arms pointed toward the ceiling. Press your low back gently into the floor by bracing your core.
Practice notes
In Flexor, Dead Bug is typically prescribed as about 45 sec per round, 1 rep, and 1 set. Adjust the dosage to what feels sustainable, breathe steadily, and ease off if anything feels sharp or unsafe.
Guidance
How to perform, tips, mistakes, safety notes, and benefits for Dead Bug.
Follow these cues in order. Move with control and stay in a comfortable range.
- Lie on your back with knees bent to 90° and arms pointed toward the ceiling.
- Press your low back gently into the floor by bracing your core.
- With control lower the opposite arm and leg without letting your back arch.
- Return to start and alternate sides.
Cues that help the movement stay smoother and more controlled.
- Exhale to brace; keep the low back gently pressed into the floor.
- Move slowly — range matters less than keeping the spine stable.
- Return to the start before switching sides; do not rush the alternation.
Patterns to watch for so the shape stays clearer.
- Letting the lower back arch off the floor as the leg lowers.
- Moving too fast and losing the brace between reps.
- Holding the breath instead of exhaling on each extension.
Keep things comfortable and stop if something feels wrong.
- Stop if you feel sharp pain, numbness, tingling, dizziness, or symptoms that radiate.
- Stay within a comfortable, controlled range; muscular effort or mild stretch tension should not become pain.
- Move smoothly without bouncing, jerking, or forcing the range.
Why people include this movement in their practice.
- Trains anti-extension core control with arm and leg movement.
- Builds coordination between opposite limbs while the spine stays stable.
- A low-load entry point for bracing before planks and loaded lifts.
Similar movements to explore next
-
Crunch Hold
Hold a partial curl-up with shoulders lifted to build abdominal endurance and bracing.
-
Pelvic Tilt Press
Supine posterior pelvic tilt that presses the lower back into the mat to train core and pelvic control.
-
Bicycle Crunch Hold
Isometric bicycle crunch hold that braces the obliques while one leg extends and the opposite elbow meets the knee.
-
Crunches
Curl the shoulder blades off the floor to train controlled abdominal flexion.
-
Hollow Body
Use Hollow Body for dynamic hollow-body rocks that challenge core tension while the body moves as one piece.
-
Hollow Body Hold
Hold a rounded supine core position with the lower back gently pressed into the floor and the arms and legs extended only as far as control allows.
-
Leg Raises
Lie on your back, brace your core, and lift both legs toward vertical then lower with control to strengthen the lower abdominals and hip flexors.
-
Toe Touch Hold
Lie on your back, lift straight legs and shoulders, and reach toward the toes for an abdominal hold.
Common questions
Which body areas does Dead Bug target?
Dead Bug is a movement that mainly targets your core and abdomen. Move within a comfortable range and skip it if it does not feel suitable for you.
Which muscles does Dead Bug work?
Primary muscles associated with Dead Bug include rectus abdominis. Flexor presents this as general wellness guidance, not a clinical assessment.
Is Dead Bug suitable for beginners?
Dead Bug is listed as beginner in Flexor. Choose a smaller range of motion, fewer repetitions, or an easier variation whenever you want more control.
How long should you hold Dead Bug?
In Flexor, Dead Bug runs for about 45 sec per round. Adjust the time to what feels sustainable, breathe steadily, and ease off sooner if anything feels sharp.
How do you do Dead Bug?
Dead Bug has 4 guided steps. Follow them in order on this page, breathe steadily, and keep the movement smooth and within a comfortable range. Stop if anything feels sharp, unstable, or unsafe for you.
Do you need any equipment for Dead Bug?
No. Dead Bug is a no-equipment movement you can do at home with just enough space to move comfortably.
Which Flexor routines include Dead Bug?
Dead Bug appears in guided Flexor sessions such as Mobility and Control, Desk Posture Reset, Glute & Hip Reset, and Spine-Friendly Mobility. Open a routine page to follow the full sequence, or practise this movement on its own from this guide.
Is this medical advice?
No. Flexor provides general fitness and wellness guidance. It does not diagnose, treat, or prevent medical conditions. Speak with a qualified professional about injuries, persistent pain, or health concerns.
