The lateral raise is the classic shoulder-width builder — a simple isolation move that lifts dumbbells out to the sides to hit the medial deltoid that presses tend to miss. Here's how to do it with good form, the muscles it works, the mistakes to avoid, and how to program it.
The lateral raise is an isolation exercise that primarily works the medial (side) deltoid — the part of the shoulder that adds width. You stand with a dumbbell in each hand and raise them out to the sides until your arms reach about shoulder height, then lower under control. Because pressing movements lean on the front delt, the lateral raise is one of the best ways to target the side head directly. It's a light, beginner-friendly movement that rewards clean form and higher reps.
The lateral raise is an isolation lift, so the side delt does nearly all of the work, with a few muscles assisting or stabilizing to keep the shoulder moving cleanly.
| Role | Muscles | What they do in the lift |
|---|---|---|
| Primary mover | Medial deltoid | Raises the arm out to the side (abduction) |
| Assisting | Supraspinatus | Helps start the raise from the bottom |
| Assisting | Anterior deltoid | Contributes if the arm drifts forward |
| Stabilizers | Traps, core, forearms | Keep the torso still and control the weight |
Step-by-step form for the standing dumbbell lateral raise. Start light — this movement rewards control, not load.
If you want to train the same movement with a different tension profile or equipment, these are the common swaps:
The lateral raise is an accessory, usually placed after your main shoulder or push work. General starting points:
| Goal | Sets × reps | Notes |
|---|---|---|
| Muscle size | 3–4 × 12–20 | Light load, controlled tempo, train close to failure since risk is low |
| Higher volume | 4–5 × 15–25 | Add sets or reps before adding weight; small jumps go a long way |
| Frequency | 2–3× / week | Side delts recover fast and tolerate frequent training |
Building a shoulder-focused push day? See Push Pull Legs, and read up on RPE to gauge how hard each set should feel.
Log every lateral-raise set — weight, reps, and an RPE value — in LiftHero, and it charts your progressive overload and flags personal records so you can watch even small side-delt gains add up. You can add warm-up sets, supersets and rest-timer holds, then drop the raise into a saved routine so it's ready the next time you train. LiftHero records what you log; it doesn't diagnose your form.
It primarily works the medial (side) deltoid, which adds shoulder width. The front deltoid, upper traps and supraspinatus assist to a smaller degree.
Use a light weight you can control through a full, smooth range. The side delt is a small muscle with a long lever, so most people need much lighter dumbbells here than on presses. If you have to swing, it's too heavy.
The upper traps kick in when you shrug or lift too heavy. Keep the shoulders down, lead with the elbows, and stop around shoulder height. Lighter weight and a controlled tempo usually keep tension on the side delt.
Both work. Dumbbells are simple and load the top most; cables keep more constant tension through the whole range, especially near the bottom. Many lifters use both.
Higher reps suit this small muscle. Most lifters do about 3–4 sets of 10–20 reps, training close to failure since the light load makes it low-risk.
Track your raises, watch your PRs climb, and run a real program — free on iOS.
Download on theApp StoreFree to start · No interruptive ads · 14-day Hero trial
This guide is educational and not medical advice. Consult a qualified coach or medical professional before starting or changing a training program.
By Meitar Lazimi, founder of LiftHero · Last updated July 9, 2026.