You don’t need planks or sit-ups to build a stronger core, just this 20-minute standing abs and arms workout

a woman performing lateral raises with a pair of dumbbells
(Image credit: Getty Images)

Traditional abs workouts often involve a lot of floor-based exercises like sit-ups and planks, and many arms workouts will get you to hit the floor for some press-ups. Those are all great exercises, but you can stay standing and still get a great abs and arms workout done, which can make for a more accessible session.

This abs and arms workout has been put together by YouTube fitness trainer FitByMik and shows just how much you can achieve while staying on your feet. You just need a set of dumbbells for the workout — Mikala is using 8lb weights — and it takes just 20 minutes, during which time you work through 20 exercises that target your abs and arms.

Throughout the workout you’ll be doing each exercise for 45 seconds and then resting for 15 seconds. During each break Mikala demonstrates the upcoming exercise and gives form tips, so keep an eye on the screen while you rest so you can start the next move on time. Given the variety of moves, using a couple of different weights or a set of the best adjustable dumbbells would be ideal, so you can change the load depending on the difficulty of each move.

Centr Smart Stack 50 Adjustable Dumbbell Set: was $399 now $299

Centr Smart Stack 50 Adjustable Dumbbell Set: was $399 now $299
This pair of adjustable dumbbells come from Centr, Chris Hemsworth's workout app. Each weight adjusts between 5lbs and 50 lbs in 5 lbs increments, replacing 10 fixed-load weights. Plus, there's a comfortable rubber grip and the weights come with a free three-month membership to Centr. 

There are a lot of combination exercises during the workout so you can target both your core and your arms in one move. You’ll be doing presses, curls and lateral raises combined with standing crunches and twists, which all adds up to a comprehensive workout for your entire core as well as the upper arms.

Watch Fitbymik’s 20-minute standing dumbbell workout

20 min STANDING ARMS AND ABS WORKOUT | With Dumbbells | No Crunches or Planks | No Repeats - YouTube 20 min STANDING ARMS AND ABS WORKOUT | With Dumbbells | No Crunches or Planks | No Repeats - YouTube
Watch On

The workout is a no-repeat session so you won’t do the same exercise twice, which helps make the time pass by more quickly in my experience. The moves do target similar muscles though, so even as you cycle through a variety of exercises you’ll feel the work in your biceps, triceps, shoulders and abs in particular.

If you’re finding it hard to work through the entire 45 seconds with each move then you can always adjust the times to 40 seconds on, 20 off, or 30 on/off, or take extra breaks during each set. Keep the focus on doing as many reps with good form as you can and pausing if you need to, rather than just pushing to 45 seconds with sloppy reps.

Keep the focus on doing as many reps with good form as you can and pausing if you need to, rather than just pushing to 45 seconds with sloppy reps.

You’ll be keeping your dumbbells in hand for most of the workout, and doing lots of presses and raises, so it’s better to err on the side of lighter weights if you’re not sure which to use. Even if the dumbbells feel very light for the first couple of reps of each set, you can be sure they’ll feel much heavier by the end. 

Along with building strength, the session is good for improving your balance, because several of the exercises involve lifting one leg off the floor while lifting weights or twisting your torso. Move deliberately throughout the workout to maximize the benefits, and also ensure you don’t lose your balance during these exercises.

If you don’t have 20 minutes to spare but still want to work your upper body this 10-minute standing arms workout is another good option, and this 10-minute full-body workout is one to try if you’d like to do a more general session rather than just target the arms.

More from Tom's Guide

Centr Smart Stack 50 Adjustable Dumbbell Set: was $399 now $299

Centr Smart Stack 50 Adjustable Dumbbell Set: was $399 now $299
This pair of adjustable dumbbells come from Centr, Chris Hemsworth's workout app. Each weight adjusts between 5lbs and 50 lbs in 5 lbs increments, replacing 10 fixed-load weights. Plus, there's a comfortable rubber grip and the weights come with a free three-month membership to Centr. 

Nick Harris-Fry
Senior Writer

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 after six weeks of training for a magazine feature and subsequently became obsessed with the sport. He now has PBs of 2hr 27min for the marathon and 15min 30sec for 5K, and has run 13 marathons in total, as well as a 50-mile ultramarathon. Nick is also a qualified Run Leader in the UK.

Nick is an established expert in the health and 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.

Read more
woman with defined abs holding a dumbbell
You just need 2 dumbbells and 15 minutes to strengthen your core with this standing abs workout
Woman doing a dumbbell bicep curl
You only need 2 dumbbells and 15 minutes to build full-body muscle with this standing workout
the back of a man performing dumbbell presses
Forget lunges — this 20-minute standing dumbbell workout strengthens the whole body
a woman's abs
No, not crunches — build a strong core using just 5 moves and a dumbbell
Woman doing a sit-up with a dumbbell
Skip the gym — all you need is 10 minutes and 2 dumbbells to strengthen your core
a photo of a woman with strong abs holding a set of dumbbells
Forget crunches — a personal trainer recommends these 5 standing ab exercises to strengthen your core
Latest in Fitness
Stanley Quencher 2.0 on a blue background
Quick! The famous Stanley Quencher is just $33 in the Amazon Spring Sale
Lululemon new year deals
Forget Amazon’s Big Spring Sale — I’m shopping Lululemon apparel from $9 in the ‘We Made Too Much’ section
a photo of Peloton leggings
Hurry! My go-to Peloton leggings are $25 right now in the Amazon Big Spring Sale
Amazon deals running
Amazon Spring Sale running deals — 15 discounts on shoes, watches and headphones I’d shop now
the Saucony Ride 17 running shoe in the Orchid/Silver colorway
I trained for a marathon in this Saucony running shoe and it's now 45% off in Amazon's Big Spring Sale
a photo of a woman with strong abdominal muscles
Forget the Reformer —5 pilates exercises you can do with just a resistance band
Latest in Features
Rusty pruning shears
How to spring clean your gardening tools — two household ingredients that really work
Wordle answer for #1,244, Thursday, November 14
I used ChatGPT to help me win at Wordle — here's what happened
a photo of a woman with strong abdominal muscles
Forget the Reformer —5 pilates exercises you can do with just a resistance band
A hand feels the temperature regulation of the SPRINGSPIRIT Dual Layer Mattress Topper.
What is a bamboo mattress topper and should you buy one?
2025 Mini Cooper Countryman SE All4 review.
I drove the Mini Cooper Countryman EV for a week — here’s my pros and cons
Troubadour Apex 3.0 Backpack
I tested this laptop backpack for 6 months — and it’s one of the best purchases I’ve ever made