No, not crunches! Strengthen your core, support your spine, and boost posture in 10 minutes with this ab workout
By Jessica Downey
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This trainer’s 20-minute workout strengthens your core, improves endurance, and fires up your abs
No crunches, no problem — sculpt your abs in just 10 minutes with this core workout
Ditch the weights — carve out stronger abs in 15 minutes with this bodyweight workout
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No, not crunches! Strengthen your core, support your spine, and boost posture in 10 minutes with this ab workout
Jessica Downey
18 September 2025
Train your core in 7 minutes and with no equipment
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When the temperature drops, it’s easy to let workouts slide, but core training is worth keeping up through winter. A strong core does more than sculpt your abs. It supports your posture during long hours indoors, improves stability for winter runs or icy walks, and makes every other workout feel stronger.
A quick 10-minute routine is also simple to slot into your day, whether it’s at home or tagged on the end of a session at the gym. One of my favorite trainers Britany Williams recently shared this routine, and let me tell you, it’s intense despite only taking a total of 10 minutes to complete.
This isn’t your standard round of crunches and planks. The workout combines twists on familiar moves with light dumbbell work and a plyo box to challenge every section of your core. The result is a routine that feels fresh, hits harder, and leaves your abs burning in the best way.
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This trainer’s 20-minute workout strengthens your core, improves endurance, and fires up your abs
No crunches, no problem — sculpt your abs in just 10 minutes with this core workout
Ditch the weights — carve out stronger abs in 15 minutes with this bodyweight workout
Watch the 10-minute Core Building Workout
A post shared by Britany Williams (@britanywilliams)
A photo posted by on
You can find a list of all the exercises below according to Williams’ instruction. The aim is to do each exercise for 30 seconds (per side for those that apply) and repeat the full circuit twice over, allowing 60 seconds rest between rounds.
Sit-up & Leg Lift
Bent Leg V-Up Twist
Rotational Side Plank
Modifies Copenhagen Plank
Overhead March
Around the World Crunch
What are the benefits of this workout?
If you think of core training as something you only do for a flat stomach, you are missing the bigger picture. A workout like this is not just about building a chiselled six-pack . It’s about creating strength in the muscles that wrap around your torso and hold you together. Your core is your body’s foundation. It steadies you when you move, keeps you upright when you sit, and gives you power when you run, lift, or twist.
Building that kind of strength takes more than endless crunches. It’s about combining different movements that hit your abs from all angles, challenge your balance, and wake up the muscles that sit deeper than the surface six pack. A routine like this does exactly that. It blends sit-ups, planks, twists, and lifts in a way that teaches your core to do its real job, which is to stabilize and support you.
The benefits spill over into daily life, too. If you spend long hours at a desk, your core can be the difference between slumping forward and sitting tall without effort. Those muscles act like scaffolding for your spine. When they are weak, your back works harder than it should, which often leads to stiffness and pain. When they are strong, your posture improves naturally, and your body feels lighter and more aligned.
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Consistency is what keeps that strength alive. Don’t be put off if you are new to core training; those muscles still respond well to being trained little and often. Ten minutes on the regular is a good starting point for building a solid base, especially with a sequence that mixes strength, stability, and mobility.
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Jessica Downey
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Senior Fitness Writer
Jessica has been a fitness writer at Tom’s Guide since 2023, bringing three years of experience writing about health, fitness, and the great outdoors. Her passion for exercise began during her childhood, where she spent weekends hiking and competing in local athletics club events. After earning a master’s degree in journalism from Cardiff University, Jessica found the perfect way to combine her love of storytelling and fitness into a career.
Jessica is passionate about testing fitness gear and tech, using her reviews to help readers make informed buying decisions. She ran her first marathon in April 2024, finishing it in 3 hours and 48 minutes. Through her training, she’s developed a deep understanding of what it takes to grow as a runner, from effective workouts and recovery techniques to selecting the right gear for every challenge.
When she’s not at her desk, Jessica enjoys spending time in the kitchen crafting new recipes, braving cold water swims and hiking.
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This trainer’s 20-minute workout strengthens your core, improves endurance, and fires up your abs
No crunches, no problem — sculpt your abs in just 10 minutes with this core workout
Ditch the weights — carve out stronger abs in 15 minutes with this bodyweight workout
New to fitness? This 10-minute abs workout is perfect for strengthening your core, and you can do it anywhere
No, not crunches — trainer says these 5 bodyweight moves are the secret to building stronger abs
Forget sit-ups — a personal trainer shares 5 bodyweight moves you need to build a stronger core
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