July 4, 2025

How This Chest Workout with Dumbbells will Build Size and Strength

Written by Will Duru. 

 Chest workout built for you.  You’re limited on equipment, and you have a pair of dumbbells, or are you at the gym, but you only want to work out with dumbbells? Look no further; the 12Reps team has created a chest workout program for you to follow with just dumbbells.

Dumbbells can be very effective in helping you build your chest muscles. This is because they recruit more muscle fibres and require you to stabilise them. As a strength and conditioning coach, when training clients, I have also preferred using dumbbells for muscle development. Still, when combined with compound movements, you’re likely to see even greater muscle gains.

Here are your working sets

  • Flat Press – 4 sets of 8–12
  • Incline Press – 4 sets of 10–12
  • Flys – 4 sets of 12–15
  • Incline Narrow Press – 4 sets of 12
  • Press-ups – 4 sets of 12
12REPS APP FOUNDER

1. Dumbbell flat Chest Press

Why: Builds overall chest size and pressing strength.

How:

  • Lie flat on a bench, dumbbells in each hand.
  • Lower them slowly until your elbows are just below chest level.
  • Press back up and squeeze your chest at the top.

Tip: Don’t let the dumbbells touch; keep tension on your pecs.

2. Dumbbell flat Chest Press

Why: Targets the upper chest and front delts. Great for giving you that all-around chest.

How:

  • Set the bench to a 30–45° incline.
  • Press the dumbbells up and together, starting from a shoulder-level position.
  • Control the descent—no bouncing.

Tip: Avoid arching your lower back. Stay tight.

3. Flat Dumbbell Flys

 Why: Stretches and isolates the chest. Great for muscle activation.

How:

  • Lie flat with arms extended above your chest, with a slight bend in the elbows.
  • Open your arms wide, as if in a hug, until you feel a slight stretch.
  • Squeeze the chest to bring them back up.

Tip: Keep the movement slow and controlled. 

4. Incline Narrow Dumbbell Press

Why: Emphasises inner chest and adds tension near the sternum.

How:

  • Use a slight incline.
  • Hold dumbbells close together, palms facing in.
  • Press up while keeping the dumbbells touching throughout.

Tip: Focus on squeezing your chest, not your triceps.

5. Press-Ups

What it hits: Full chest, triceps, and core

How to do it:

  • Hands slightly wider than shoulders

  • Lower your chest close to the floor

  • Push up while keeping your core braced

    Keep in mind: Control each rep. Don’t rush. 

Rest: 60–90 seconds between sets.

Focus: Slow, full-range reps with strong contractions.

Train with intent. Keep your form tight.

And don’t overcomplicate it—chest grows from consistency, not magic.

Would you like a version with photos or graphics? I can mock that up too. 

Share this article

12Reps Team

Personal Trainer

The 12reps app is your ultimate fitness companion, crafting tailored workout plans, tracking your progress, and keeping you motivated every step of the way. Whether you’re at home, in the gym, or on the go, our adaptable approach fits seamlessly into your lifestyle — providing the support and guidance you need to crush your goals and stay on track.

Stay in the loop with 12reps

We know how important it is to stay motivated and informed on your fitness journey. That’s why our newsletter is packed with everything you need to succeed:
By submitting your information, you agree to subscribe to the 12reps mailing list in order to receive my free PDF guides plus fitness video tutorials, nutrition plans and tips and exclusive offers.
Verified by MonsterInsights