Stomach Vacuum
The stomach vacuum is a static breathing exercise where you exhale completely, then pull your stomach in and up as far as you can and hold the position. Unlike a crunch or sit-up, it doesn't bend your spine at all; instead, it trains the deep transverse abdominis muscle that wraps around your midsection like a natural belt.
Why it works
Most ab exercises target the rectus abdominis, the muscle that gives a visible six-pack and bends your spine forward. The stomach vacuum instead trains the transverse abdominis, a deeper muscle that doesn't move your spine at all but compresses your abdominal contents and supports your lower back from the inside. Fully exhaling first matters because it empties your lungs enough that you can draw your stomach in far beyond what's possible with air still in your chest.
Set up
- Stand tall, or start on your hands and knees if standing feels unstable at first.
- Rest your fingertips lightly over your belly so you can track the movement.
- Relax your shoulders and keep your spine in a neutral position before you begin.
How to do it
- Exhale all the air from your lungs completely.
- Pull your stomach in and up, as if trying to touch your belly button to your spine.
- Hold the drawn-in position for 10 to 20 seconds while breathing in small, shallow breaths if needed.
- Release and breathe normally between repetitions.
- Repeat for several rounds once you've caught your breath.
Form cues
- Exhale fully before you draw in, since a full exhale is what creates the extra range to pull from.
- Keep your spine still throughout; this is a pulling-in motion, not a bending one.
- Relax your shoulders and neck instead of tensing them to help the pull.
- Breathe in small sips during the hold rather than fully releasing the brace.
Breathing: Exhale completely before drawing your stomach in, then take small, shallow breaths during the hold without fully releasing the contraction.
Common mistakes
Not exhaling fully before drawing in.
Fix: Push out every bit of air you can first; a shallow exhale leaves far less room for your stomach to pull in.
Holding the breath instead of allowing small sips of air during the hold.
Fix: Let yourself take small, shallow breaths while maintaining the drawn-in position, since holding your breath entirely isn't sustainable or necessary.
Tensing the shoulders and neck to help pull the stomach in.
Fix: Keep your upper body relaxed; the pull should come entirely from your deep abdominal muscles, not your neck or shoulders.
How to program it
- Because it's a low-fatigue, static breathing drill, most people can do it daily without any issue.
- Start with 3 to 5 rounds of 10 to 15 second holds and build toward longer holds as the technique feels more natural.
- Practice it first thing in the morning on an empty stomach, since a full stomach makes the technique harder to feel.
- Use it as a brief addition before or after a core session rather than a replacement for other ab or lower-back training.
Safety notes
- Skip this exercise if you're pregnant or have a hernia, since the technique significantly increases intra-abdominal pressure.
- Stop if you feel lightheaded; shorten the hold and allow more frequent breathing in future attempts.
Exercise profile
- Force
- Static
- Mechanics
- Isolation
- Category
- Stretching
Frequently asked questions
How long should I hold a stomach vacuum?
Start with 10 to 15 seconds per hold, building toward 20 to 30 seconds as the technique and your comfort with the breath control improve.
How often can I do stomach vacuums?
Since it's a low-fatigue static drill, most people can practice it daily, often in short rounds in the morning.
Does the stomach vacuum build visible abs?
It trains the deep transverse abdominis rather than the rectus abdominis that creates visible definition, so it supports your core from the inside without directly building a six-pack look.
Can I do this lying down?
Yes, standing, on all fours, and lying on your back are all common positions; starting on all fours or lying down can make the technique easier to feel at first.
Why do I feel lightheaded doing this?
Holding your breath too long without small sips of air is the usual cause. Shorten your holds and allow brief shallow breaths while maintaining the drawn-in position.