Forget HIIT — this slow and controlled abs and deep core workout builds strength and stability in just 15 minutes
No equipment is required for this short core session
While I love doing a frenetic HIIT workout from time to time, more often than not, I prefer to take a more measured approach to my strength sessions.
I find controlled, steady workouts more approachable and easier to motivate myself to do, and when it comes to core strength, keeping your movements slow can help engage the target muscles longer and get your abs burning faster than an all-out HIIT blast.
This 15-minute workout from fitness trainer Mikala, better known as FitByMik on YouTube, works your whole core, including the abs, obliques and deeper stabilizer muscles, all while keeping the pace steady and controlled.
It’s a challenging session but includes modifications so anyone can try, and you don’t need any equipment to do it, though rolling out one of the best yoga mats will make it more comfortable on hard floors.
Watch FitByMik’s 15-minute deep core workout
You do 15 exercises in the session, working for 45 seconds, then resting for 15 seconds while getting into position for the next move.
Mikala does the whole workout with you and gives guidance on your form and breathing throughout, as well as some encouragement to keep going when things get tough. It’s worth making sure you can see and hear her throughout.
The 45-second sets feel long, but the aim is to keep moving throughout, working at a slow, steady pace so you don’t burn out quickly, but instead, challenge your core muscles to keep going for the whole time.
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Working at a controlled pace gives you more of a chance to focus on your form, ensure you’re engaging the right muscles with each move and use your core to drive the movement rather than relying on other muscles or momentum.
One thing I always notice with slower abs workouts is that I’m better at keeping my lower back imprinted on the floor for moves where I’m lying on the floor — this is something I often lose track of when doing fast abs workouts.
Moving more slowly also helps you keep your breathing steady while moving. Timing your inhales and exhales to the movements will help you work through longer sets, and sometimes during HIIT sessions I forget to breathe for long stretches.
If you enjoy the slower approach to core training, but don’t have even 15 minutes to spare, try this eight-minute Pilates session instead.
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Nick Harris-Fry is an experienced health and fitness journalist, writing professionally since 2012. He spent nine years working on the Coach magazine and website before moving to the fitness team at Tom’s Guide in 2024. Nick is a keen runner and also the founder of YouTube channel The Run Testers, which specialises in reviewing running shoes, watches, headphones and other gear.
Nick ran his first marathon in 2016 and became obsessed with the sport. He now has PBs of 2hr 25min for the marathon and 15min 30sec for 5K. Nick is also a qualified Run Leader in the UK.
Nick is an established expert in the fitness area and along with writing for many publications, including Live Science, Expert Reviews, Wareable, Coach and Get Sweat Go, he has been quoted on The Guardian and The Independent.
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