Training Guides / Muscle group guides
Chest training guide
How the chest muscles work, the best exercises for the upper, middle and lower chest, and how many weekly sets to aim for, with a sample routine.
The chest is mostly made up of the pectoralis major, a large fan-shaped muscle that runs from the collarbone and breastbone to the upper arm. Underneath it sits the smaller pectoralis minor, which helps move the shoulder blade. A strong chest powers pushing movements, from pressing a barbell to pushing yourself up off the floor.
What the chest does
| Action | Example |
|---|---|
| Horizontal adduction: bringing the arm across the body | Chest fly, bench press |
| Shoulder flexion: raising the arm forward (upper fibers) | Incline press, front raise |
| Shoulder extension from overhead (lower fibers) | Dips, decline press, pullover |
| Internal rotation | Turning the arm inward |
The pectoralis major has a clavicular head (upper chest, attached to the collarbone) and a larger sternal head (middle and lower chest, attached to the breastbone). You cannot isolate one part completely, but you can shift the emphasis.
Best exercises
| Exercise | Emphasis | Notes |
|---|---|---|
| Bench press | Whole chest, triceps | Main strength builder |
| Dumbbell bench press | Whole chest | Bigger stretch, each side works alone |
| Incline press (30 to 45 degrees) | Upper chest, front delts | Many lifters underdevelop the upper chest |
| Dips | Lower chest, triceps | Lean forward for more chest |
| Push-up | Whole chest, serratus | Anywhere, easy to scale |
| Cable or dumbbell fly | Chest with less triceps | Great stretch, keep elbows slightly bent |
| Machine chest press | Whole chest | Safe to push close to failure |
How much volume?
For most intermediate lifters, roughly 10 to 20 hard sets per week for the chest, split across two or more sessions, is a sensible range. Beginners grow well on less, around 6 to 10 sets. Count pressing exercises such as bench and dips as chest sets.
Sample weekly chest work
| Session | Exercise | Sets x reps |
|---|---|---|
| Day 1 | Bench press | 4 x 5-8 |
| Day 1 | Incline dumbbell press | 3 x 8-12 |
| Day 2 | Weighted dips or push-ups | 3 x 8-12 |
| Day 2 | Cable fly | 3 x 12-15 |
That is 13 hard sets across two sessions, a solid amount for most people.
Tips for better chest growth
- Keep the shoulder blades pulled back on presses so the chest, not the front shoulder, does the work.
- Use a full range of motion, including a deep but comfortable stretch at the bottom.
- Do not neglect the upper chest. Put an incline press in every week.
- Balance with pulling. Pair chest work with at least as much back work; see the back guide.
Common problems
Shoulders take over on presses. Lower the weight, tighten the upper back, tuck elbows slightly.
Shoulder discomfort on dips or deep flys. Shorten the range, or swap to presses with a neutral grip.
Chest not growing despite a big bench. Strength lifts with a wide grip and arched back reduce range of motion. Add higher-rep dumbbell work and flys.
The chest is easy to overtrain at the expense of everything else. A balanced program, like the upper/lower split, keeps your physique and shoulders healthy.
