You don't need weights to build full-body muscle and strengthen your core, just this 20-minute bodyweight workout

Woman doing a bodyweight squat outside near water
(Image credit: Getty Images/Vladimir Sukhachev)

You don't need a gym to build muscle all over your body. The large equipment can be great for training, but you can also get results without any of that using just your body weight and this short 20-minute workout.

All you need is one of the best yoga mats for some support and a bit of space to get started. The routine, developed by the workout app WithU, is designed to target your whole body, engaging your core muscles to improve your balance, stability and posture too.

The session is led by two instructors demonstrating modifications on the same exercise so you can choose the intensity that works best for you. According to Natasha Hickey, Master Trainer at WithU: “The regressions and low-impact options means every move is accessible.

“Every day is different, and so are your energy levels. Don’t hesitate to switch between the full exercise and its regression as needed. The goal is to challenge yourself without pushing past your limits and compromising on technique or enjoyment.”

But to get the most from your training and avoid injury, it’s vital that you do each exercise with proper form. If you’re new to these moves or could use a refresher, you can follow along with the demonstrations from coaches Omar and Craig to practice your technique as you go.

Watch WithU’s 20-minute bodyweight strength workout

As Hickey explains, “this workout is a unique accumulator-style total body workout, blending strength and high-intensity interval training (HIIT) exercises for maximum impact. It targets the lower body, upper body, and core, while giving you the flexibility to adjust to your needs.”

It’s crucial to train your core, a section of mid-body muscle that includes the rectus abdominis six-pack ab muscle, but you don’t have to do endless sit-ups to get there, as this routine shows. Instead, adding several compound exercises to your training is the most efficient way.

These work multiple muscles simultaneously and engage your core for stability and balance, helping develop your mid-section for improved circulation and better posture. But if you want to vary your training with a dedicated routine, give the best core workouts a shot too.

WithU 1-month subscription: was $9.99 now $0 @ WithU

WithU 1-month subscription: was $9.99 now $0 @ WithU
WithU has more than 1,000 instructor-led audio sessions across over 20 fitness disciplines available to stream in its app, ranging from as little as 6 minutes up to extended 70-minute workouts. The regular cost is $9.99 per month, but WithU is offering Tom's Guide readers a free month — all you have to do is scan the QR code in the video or visit their store. And for Black Friday, there's 50% off monthly or annual subscriptions for new members. Don't miss out — the sale only lasts until Monday Dec 2nd.

Although you can follow along with the instructors video demonstrations in this video, it’s a little different than WithU’s usual format. The app made a name for itself as an audio-first workout platform, with short demonstrations for each move instead.

This makes it a great companion for gym sessions where you want to stick in a pair of workout headphones, lock your phone and get on with your training. Plus, not everyone wants to watch a video while they exercise (me included), so this more podcast-like format might suit you better.

And while I spend hours searching out the best new workout music to keep me motivated while exercising, the WithU sessions are synced to a specific playlist, so you don't need to customize playlists as the app already has it covered. So all you need to do is press play and work out.

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James Frew
Buying Guide Editor

James is Tom's Guide's Buying Guide Editor, overseeing the site's buying advice. He was previously Fitness Editor, covering strength training workouts, cardio exercise, and accessible ways to improve your health and wellbeing.At his first job at as a sales assistant in a department store, James learned how important it is to help people make purchasing decisions that are right for their needs, whether that's a fountain pen to give as a gift or a new fridge for their kitchen.

This skill stayed with him as he developed a career in journalism as a freelance technology writer and, later, as Buying Guide Editor for MakeUseOf, where his interest in fitness combined with his commitment to impartial buying advice.

This is how he came to join Fit&Well as Fitness Editor, covering beginner-friendly exercise routines, affordable ways to boost your wellbeing, and reviewed weights, rowing machines, and workout headphones.

James is an advocate for sustainability and reparability, and focuses his reviews and advice through that lens to offer objective insights as to whether a specific product or service will be right for your needs.

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