I did these 3 dumbbell exercises for summer-worthy arms — no gym required | Tom's Guide

This five-minute dumbbell workout targets your biceps, triceps, and shoulders

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What if just three exercises could help sculpt stronger, more defined arms in time for the summer? Good news — they can.

Well-defined arms can boost your confidence in the warmer months, but if your upper body isn’t quite there yet, don’t worry. Personal Trainer Dr. Robin Barrett from the Ladder workout app has designed a quick routine that delivers visible results in just five minutes a day.

This five-minute workout uses compound movements to engage multiple upper-body muscles simultaneously, targeting the biceps, triceps, shoulders, and upper back. No gym? No problem — all you need is a pair of the best adjustable dumbbells so you can scale the weight as you go.

“Dumbbells are a great way to challenge yourself with limited kit,” says Dr. Robin. “They require you to stabilize the load and control the movement path, which makes the workout more effective. Plus, you can do a huge variety of exercises with them, which keeps things fun and helps you stay consistent — and that’s how you get results.”

“This workout uses compound exercises that hit multiple muscle groups and push the upper body to total fatigue,” says Dr. Robin. “You’ll burn a lot of calories in a short amount of time.”

Use it on its own or pair it with other strength routines for a well-rounded program.

Perform one set of each exercise for 12–15 reps, back to back, with minimal rest between moves. Repeat the circuit three times. If you’ve got more time or energy, go for an extra round (or two)

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Reps: 12–15

Why: This variation of the lateral raise rotates the wrists so your palms face up, increasing activation in the middle deltoids while also challenging grip and shoulder stability. It’s a subtle shift that delivers a serious burn.

How:

Reps: 12–15 each side

Why: This move targets the front of the shoulders (anterior deltoids) while improving strength and stability. Alternating arms reduces fatigue and allows you to focus on good form.

How:

Reps: 12–15

Why: This combo move hits the shoulders, traps, and rotator cuff in one smooth sequence, improving both strength and mobility.

How:

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The proof is in the pudding — I’m proud of my sculpted arms, and enjoyed adding this workout to my routine for a week. There’s no complicated routine or heavy weights — just a set of dumbbells and a few focused moves.

My arms burned as I got to the final few reps, but at just five minutes long, it was over before I knew it. I love the confidence sculpted biceps, triceps, and shoulders give me. What are you waiting for? Grab a set of dumbbells and give this one a go.

Lucy Miller is a Journalist, Level 3 Personal Trainer, Nutritional Advisor and Children’s Fitness Specialist. She holds fitness qualifications from NASM Training and Premier Training International and has been a fitness journalist and model for over 20 years.

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