Alternating dead bug
Abs · no equipment. Extend the opposite arm and leg without lifting your lower back.

Main muscle: Abs
Also works: almost all the work falls on the main muscle
Equipment: no equipment
Typical: 2–4 slow sets of 8–15; per side when alternating.
How to do it
- Extend the opposite arm and leg without lifting your lower back.
- Start with your arms toward the ceiling and knees over your hips at 90°.
- Exhale as you extend, go only as far as your back stays down, and alternate.
Common mistakes
- Arching your lower back as the leg lowers.
- Moving fast and losing coordination.
- Holding your breath.
Alternative
No equipment, or want to switch it up: Quadruped bird dog.
Log it in one message
Type or say: “Did 3 sets of 12 dead bug.”
Fituba logs the weights session and its points; in Train you can add sets, reps and load to compare your strength progress. Sample wording, not a prescription.FAQ
What muscles does the alternating dead bug work?
Main: abs. It's an isolation exercise: almost all the work falls on that muscle.
How many sets and reps of dead bug?
Typical: 2–4 slow sets of 8–15; per side when alternating. Adjust the load so you finish every set with good form; the load is the extra weight on top of your bodyweight.
How do I log dead bug in Fituba?
Type “Did 3 sets of 12 dead bug” and Fituba logs your weights session with its sets, reps and load.
Sources and limits
Original Fituba copy based on standard technique guides (StrengthLog · Abs). General education: the demo and these notes don't assess your form, mobility or the right load for you; for individual coaching, see a trainer.
More abs exercises
Fituba documentation · Who's behind it and editorial method ·