Exercise

Barbell Squat: How to Do It, Muscles Worked

Last updated 26 July 2026

What muscles does the Barbell Squat work?

The Barbell Squat primarily targets the quadriceps, and also recruits the calves, glutes, hamstrings, lower back as secondary muscles. It's classified as a beginner-level strength movement using barbell.

What are the most common Barbell Squat mistakes?

• Letting the knees cave inward as the weight gets heavy, instead of tracking over the toes.
• Losing a neutral spine and rounding the lower back at the bottom of the rep.
• Rising with the hips first ("good morning squat"), which shifts load off the legs and onto the lower back.
• Stopping the descent short of the target depth for the variation being trained.

How should I program the Barbell Squat — sets, reps and frequency?

As a lower-body compound lift, it responds well to a moderate-to-heavy 6-10 reps for 3 sets while technique is being built. Most lifters train it once or twice a week as a primary movement in a push/pull/legs or upper/lower split. Add small amounts of weight or an extra rep once every working set can be completed with good form — the same progressive overload principle behind every strength exercise in the library.

What are good Barbell Squat variations and alternatives?

• Barbell Full Squat — barbell, intermediate level, quadriceps
• Box Squat — barbell, intermediate level, quadriceps
• Overhead Squat — barbell, expert level, quadriceps
• Zercher Squats — barbell, expert level, quadriceps

Barbell Squat at a glance

Attribute	Value
Level	Beginner
Equipment	Barbell
Category	Strength
Primary muscles	Quadriceps
Secondary muscles	Calves, Glutes, Hamstrings, Lower Back

How to do the Barbell Squat, step by step:

1. Step 1. This exercise is best performed inside a squat rack for safety purposes. To begin, first set the bar on a rack to just below shoulder level. Once the correct height is chosen and the bar is loaded, step under the bar and place the back of your shoulders (slightly below the neck) across it.
2. Step 2. Hold on to the bar using both arms at each side and lift it off the rack by first pushing with your legs and at the same time straightening your torso.
3. Step 3. Step away from the rack and position your legs using a shoulder width medium stance with the toes slightly pointed out. Keep your head up at all times and also maintain a straight back. This will be your starting position. (Note: For the purposes of this discussion we will use the medium stance described above which targets overall development; however you can choose any of the three stances discussed in the foot stances section).
4. Step 4. Begin to slowly lower the bar by bending the knees and hips as you maintain a straight posture with the head up. Continue down until the angle between the upper leg and the calves becomes slightly less than 90-degrees. Inhale as you perform this portion of the movement. Tip: If you performed the exercise correctly, the front of the knees should make an imaginary straight line with the toes that is perpendicular to the front. If your knees are past that imaginary line (if they are past your toes) then you are placing undue stress on the knee and the exercise has been performed incorrectly.
5. Step 5. Begin to raise the bar as you exhale by pushing the floor with the heel of your foot as you straighten the legs again and go back to the starting position.
6. Step 6. Repeat for the recommended amount of repetitions.