Maybe standing workouts are tough on your knees, or maybe you just want to sneak in some core work between meetings.
Either way, this chair abs workout at home is built for exactly that.
We’re rolling through 21 sitting ab workouts that hit your abs, obliques, and lower belly, and the best part is you won’t need a single crunch on the floor.
It’s become a favorite for busy women, beginners, and anyone easing back into movement, since all you really need is a sturdy chair.
So sit tall, take a deep breath, and let these Seated Exercises do the rest!
Seated Side Bend
We’re easing into things with a gentle side bend that wakes up your obliques without any bouncing or jumping.
It’s one of those seated ab exercises that feels easy at first, though you’ll start feeling the squeeze after a few reps.
How to perform:
- Sit tall on the edge of the chair with your feet flat on the floor.
- Place your right hand on your right hip to anchor your lower body.
- Extend your left leg straight out to the side, keeping your heel grounded.
- Reach your left arm straight up and bend your torso over to the right.
- Use your core to pull your body back to the starting upright position.
- Switch sides and repeat the motion, alternating sides continuously.
Seated High Knee Taps
Remember marching in place as a kid? This is the grown-up, core-focused version of that.
Lifting those knees high is what really fires up your lower belly, so resist the urge to rush.
How to perform:
- Sit up straight on your chair with your feet flat on the floor.
- Bend your elbows 90 degrees, holding your open hands up near your ears.
- Lift your right knee straight up towards your chest as high as you can.
- Bring both hands down to tap them together underneath your raised thigh.
- Lower your leg back to the floor while raising your arms back up.
- Switch legs and repeat the motion, alternating sides.
Seated Cross Body Crunches
Your obliques deserve some love too, and this is where they get it.
The cross-body motion forces your core to rotate, which is exactly what most sitting ab workouts skip over.
How to perform:
- Sit near the edge of the chair with a straight back and flat feet.
- Place your hands lightly behind your head with your elbows pointing wide.
- Lift your right knee up towards your chest, keeping your core engaged.
- Twist your torso to the right, bringing your left elbow across to meet the knee.
- Untwist your upper body and lower your foot back to the floor.
- Switch sides by bringing your right elbow to your left knee, alternating continuously.
Seated Punches
Don’t let the name fool you, because this isn’t really about your arms.
When you twist through each punch, your core has to brace to keep you steady, and that’s where the real work happens.
How to perform:
- Sit up straight with your feet flat and spaced about shoulder-width apart.
- Bring your fists up just below your chin into a boxing guard position.
- Twist your torso to the left and punch your right arm straight across your body.
- Pull your arm back to the guard position while twisting back to the center.
- Twist your torso to the right and punch your left arm straight across.
- Continue to alternate your punches fluidly from side to side.
Seated Leg Raises Toe Touch
Lower abs are notoriously stubborn, so we’re giving them some dedicated attention with this one.
Reaching for your toes adds a little extra crunch at the top, which makes it way more effective than a plain leg raise.
How to perform:
- Sit and lean your upper body back slightly, maintaining a straight back.
- Hold your arms bent with your fists resting comfortably near your chest.
- Lift your right leg straight upward toward the ceiling without bending the knee.
- Simultaneously reach your left arm straight forward to touch your right toes.
- Lower your leg to the floor and pull your arm back to your chest.
- Switch sides by raising your left leg and touching it with your right arm.
Overhead Side Bend
Ever notice how your sides feel tight after a long day at your desk? This move is the perfect antidote.
Reaching tall before you bend is the secret since it lengthens your side body and gives your obliques more room to work.
How to perform:
- Sit tall in your chair with your feet flat and shoulder-width apart.
- Extend both arms straight up above your head and clasp your hands together.
- Keeping your arms fully straight, slowly bend your torso to the left side.
- Use your core muscles to pull your upper body back to the upright center.
- Slowly bend your torso to the right side, feeling the stretch in your obliques.
- Return to the center and continue alternating your side bends.
Seated Bicycle Crunches
Floor bicycles are a classic, but doing them in a chair is a whole different story.
Your core has to work overtime to keep you balanced, which is why it’s one of the best chair exercises for belly toning.
How to perform:
- Sit near the edge of the chair with your legs in a wide stance.
- Place your hands lightly behind your head with your elbows pointing outward.
- Lift your right knee up and out to the side toward your torso.
- Crunch your torso to the right, tapping your right elbow to your knee.
- Sit back up straight and lower your right foot back to the floor.
- Switch sides by crunching your left elbow down to your left knee.
- Continue alternating sides in a smooth, controlled motion.
Seated Windmill
Smooth, flowing motion is the name of the game here, and your obliques are about to feel why.
Keep things controlled the whole way through because rushing turns it into momentum instead of muscle work.
How to perform:
- Sit near the edge of the chair with your legs together.
- Extend both arms overhead to form a wide “V” shape.
- Twist your torso to the right and hinge forward.
- Reach your left hand down to touch your right foot.
- Keep your right arm pointing straight up to the ceiling.
- Sit back up and untwist to the starting position.
- Switch sides and repeat the motion smoothly.
Seated Crunch to Arm Sweep
Sweeping your arm across your body might look simple, though pair it with a crunch and your sides will be burning in no time.
The arm sweep gives you extra range of motion, so really commit to the reach.
How to perform:
- Sit tall with feet flat and hands lightly behind your head.
- Lift your right knee and hinge your chest forward toward it.
- Lower your foot, then lift your left knee and hinge forward.
- Sit back up straight to the center position.
- Lean your torso to the right, sweeping your right arm down to the floor.
- Return to the center with both hands behind your head.
- Lean to the left, sweeping your left arm down to the floor.
- Return to the center and repeat the full four-part sequence.
Seated Good Mornings
Strong abs aren’t much use without a strong lower back to match, and this move trains both at once.
Hinging forward with a flat back is the key, since rounding your spine takes the work away from where you want it.
How to perform:
- Sit on the edge of the chair with your feet slightly wider than hip-width apart.
- Cross your arms securely over your chest, resting hands near opposite shoulders.
- Keep your back perfectly flat and straight, ensuring you don’t round your shoulders.
- Hinge forward at the hips, lowering your chest until it hovers over your thighs.
- Pause briefly at the bottom to feel the stretch in your lower back.
- Use your core to pull your torso back up to the starting upright position and repeat.
Seated Straight Leg Lifts
Keeping your legs straight makes this way harder than it sounds, and your lower abs are about to find that out.
If your legs feel too heavy, just bend your knees a little until you build up more strength.
How to perform:
- Sit toward the front edge of the chair and lean your upper body backward slightly.
- Grip the sides of the seat firmly with both hands to keep your body stable.
- Extend both legs straight out in front of you so your heels rest lightly on the floor.
- Keep your knee completely straight and lift your right leg toward the ceiling.
- Slowly lower your right leg back down until your heel touches the floor.
- Switch legs by lifting your straight left leg upward, alternating sides continuously.
Seated Lean Backs
Looks chill, right? Don’t be fooled.
Leaning back puts your abs in a constant state of tension, so even though you’re barely moving, your core is working harder than ever.
How to perform:
- Sit straight up near the middle of your chair with your feet flat on the floor.
- Cross your arms over your chest and pull your belly button in to engage your core.
- Keeping your spine perfectly rigid, slowly lean your upper body backward.
- Stop leaning just before your back touches the chair, letting your abs hold your weight.
- Use your core muscles to pull your torso back up to the vertical starting position.
- Repeat the leaning motion in a slow, controlled manner.
Seated Leg Toe Touches
Why hit your upper and lower abs separately when you can crush them at the same time?
Reaching for your toes while lifting your legs creates a full crunch from top to bottom, which is a huge time-saver.
How to perform:
- Sit on the edge of the chair, extending your legs straight out with heels on the floor.
- Lean your upper body back at an angle and extend both arms straight up overhead.
- Engage your core to lift your right leg straight up into the air.
- Crunch your upper body forward, reaching both hands down to touch your right toes.
- Lean back to the starting angle while returning arms overhead and lowering the leg.
- Switch sides by lifting your left leg and crunching forward to touch your toes.
Seated Torso Twists
Rotating from side to side might feel easy, though the trick is keeping your hips planted so your core does all the twisting.
Move with control instead of speed, because rushing turns it into a momentum game.
How to perform:
- Sit up straight with your feet flat and your knees bent at 90 degrees.
- Extend both arms straight out in front of your chest.
- Twist your torso to the right, pulling your right elbow straight back behind you.
- Keep your left arm fully extended forward across your body as you twist.
- Return to the center with both arms extended straight out in front of you.
- Switch sides by twisting left and pulling your left elbow back, alternating smoothly.
Seated High Knee Twists
Two movements at once means double the core work, and that’s the whole idea here.
Even though you’re staying in your chair, your abs are going to feel like you’ve been doing standing cardio.
How to perform:
- Sit straight on the chair with your feet securely flat on the floor.
- Raise your arms out to the sides and bend your elbows 90 degrees so hands point upward.
- Lift your right knee as high as you comfortably can toward your chest.
- As you lift the knee, twist your entire upper body to the right side.
- Lower your leg to the floor and untwist your torso back to the center position.
- Switch sides by lifting your left knee and twisting to the left, alternating continuously.
Seated Side Sweeps
Your obliques and hip flexors are about to team up, whether they like it or not.
Keep your upper body still so the work stays where it should, which is right in your core.
How to perform:
- Sit near the edge of the chair, spread your legs wide, and plant feet firmly on the floor.
- Sit up tall with your back straight and your arms hanging relaxed at your sides.
- Lean your torso sideways to the right, reaching your right hand down to tap the floor.
- Use your oblique core muscles to pull your torso back up to the center upright position.
- Lean your torso to the left side, reaching your left hand down to tap the floor.
- Alternate sides smoothly, keeping your chest open and avoiding pitching forward.
Seated Rapid Torso Twists
Picking up the pace turns a simple twist into a serious cardio-meets-core moment.
Just don’t sacrifice form for speed since sloppy twists won’t give you the results you’re after.
How to perform:
- Sit straight on the chair with your legs held closely together.
- Bend your elbows and hold your hands overlapped against your chest.
- Twist your upper body right while shifting your knees and feet left.
- Quickly reverse, twisting your torso left while shifting your knees right.
- Keep your core tight to control the opposing momentum.
- Continue this rapid, side-to-side twisting motion at a steady rhythm.
Seated Flutter Kicks
Those quick little kicks might seem harmless, though your lower abs will disagree pretty quickly.
The constant motion keeps your core under tension, which is the whole point of Seated Exercises like this one.
How to perform:
- Sit on the front edge of the chair and lean your upper body backward slightly.
- Hold onto the sides of the seat tightly with both hands to maintain your balance.
- Extend both legs straight out in front of you, hovering your heels above the floor.
- Keeping your legs straight, lift your right leg slightly higher while lowering the left leg.
- Immediately reverse the motion, lifting the left leg upward while lowering the right leg.
- Continue kicking your legs up and down in a rapid, fluttering motion without touching down.
Seated Arms Torso Twists
Who needs weights when you’ve got gravity?
Holding your arms up while you twist adds resistance to every rep, so your shoulders will feel it too even though your obliques are the main target.
How to perform:
- Sit upright near the edge of the chair with your feet flat and knees together.
- Clasp your hands together, bending your elbows to 90 degrees at shoulder height.
- Keep your lower body completely still and engage your core.
- Twist your torso and arms as far as you can to the right side.
- Twist back through the center and smoothly over to the left side.
- Continue alternating twists side to side while keeping your elbows elevated.
Seated Knee Tucks
This is one of the most direct ways to fire up your lower abs, and you don’t need anything but your chair.
Squeeze hard at the top of each rep so you get the full benefit of the move.
How to perform:
- Sit near the edge of the chair, lean back slightly, and firmly grip the seat edges.
- Keep your legs together with your knees bent.
- Use your core to lift both knees up toward your chest.
- Lower your legs back down and lightly tap your toes on the floor.
- Immediately lift your knees back up the moment your toes touch down.
- Continue this up-and-down lifting motion at a steady, controlled pace.
Seated Torso Circles
You made it to the end, so let’s bring everything down with some slow, easy circles to release any tension you built up.
Move with your breath and enjoy the stretch, because your core has earned it.
How to perform:
- Sit comfortably near the center of the chair with your feet flat on the floor.
- Place both hands securely on your hips to help guide the movement.
- Lean your upper body forward slightly while maintaining a relatively straight spine.
- Slowly roll your torso in a large, continuous circle: lean right, backward, left, and forward.
- Complete slow, full rotations in one direction to release tension in your back and core.
- Switch directions halfway through the cool-down period to circle your torso the opposite way.
Article Medically reviewed by
I’m fitness coach Ashley Castleberry, an NASM-certified personal trainer and nutritionist, as well as a coach on an established YouTube Channel with over 1 million followers. With certifications from major fitness brands, I specialize in athletic, HIIT, and strength training. Leveraging my experience coaching clients on lifestyle changes, I provide customized exercise and nutrition guidance to help people reach their fitness goals, whether that be weight loss, muscle gain or overall health improvement.
