Lunges: Technique, Muscles, and the Best Variations

Lunges are among the most effective exercises for building strong, stable legs—they work your thighs, glutes, and core in a single movement while also improving your balance. Because you engage each leg individually, you can even out any differences in strength between your left and right sides, which often go unnoticed during two-legged exercises like squats.

The big advantage: You don't need any heavy equipment. Lunges work just as well using your own body weight as they do with dumbbells or a barbell, whether at the gym or at home. In this guide, you'll learn the proper form, which muscles are actually being worked, the most important variations, and the common mistakes you should avoid.

What exactly are lunges?

The lunge is a one-legged (unilateral) squat-like movement. You step one leg forward or backward into a lunge position and then lower your body until both knees are bent at roughly a right angle. You then push yourself back up using your front leg. Unlike the classic squat, your weight is primarily on one leg—which makes the exercise more challenging for coordination, stability, and the deep core muscles.

It is precisely this single-leg load that makes lunges a staple of nearly every well-designed leg workout. They are the perfect complement to basic two-legged exercises and translate well to everyday life and sports, where you rarely push off with both legs at the same time—whether you’re walking, running, climbing stairs, or jumping.

Which muscles do lunges work?

Lunges are a true full-body leg exercise. They primarily target the front of the thighs and the glutes, but the posterior chain and the core also do significantly more work than many people realize.

Muscle	Role in the lunge	Stress
Quadriceps (front of the thigh)	Extend your knee as you push up	Very high
Gluteus maximus (large gluteal muscle)	Extends the hips, especially when leaning the upper body forward	High
Hamstrings	Supports hip extension and stabilizes the knee	Medium
Adductors (inner thighs)	Stabilize the front leg laterally	Medium
Calves & Core	Maintain balance and good posture	Stabilizing

You can control the balance of effort between your glutes and quadriceps by adjusting your posture: The further you lean forward—keeping your upper body upright but slightly bent forward—and the longer your stride, the more work your glutes and hamstrings will do. A shorter stride with your upper body upright shifts the load more toward your quadriceps.

How to Do Lunges Correctly: Step by Step

1. Starting Point

Stand with your feet hip-width apart, your core slightly engaged, and your gaze straight ahead. Take a controlled step forward with one leg—about far enough so that both knees will later be at a right angle. Your weight is distributed between the heel of your front foot and the ball of your back foot.

2. Downward movement

Lower your body straight down, not forward. Keep your front knee directly over your foot and don't let it extend significantly past your toes. Lower your back knee toward the floor without letting it hit the floor hard. Keep your upper body upright and your core stable.

3. Upward Movement

Push yourself back up in a controlled manner using the heel of your front leg to return to the starting position. Avoid using your back leg to push yourself up—the front leg should do all the work. Breathe in as you lower yourself and breathe out as you push yourself up.

To start with, the stationary lunge (also known as a split squat) is a good choice: You stay in the lunge position and move only up and down. This allows you to focus fully on your form before moving on to more dynamic variations.

An Overview of the Best Options

The great appeal of lunges lies in their variety. Depending on your goals and fitness level, you can focus on different aspects.

Variant	Focus	Level
Split Squat	Learning technique, targeted strength	Beginners
Reverse Lunge	Easier on the knees, more glutes	Beginners
Forward lunge	Front of the Thigh, Balance	Advanced
Walking Lunges	Strength Endurance, Coordination	Advanced
Bulgarian Split Squat (Rear Foot Elevated)	Maximum load per leg	Advanced
Side Lunge	Inner/Outer Thigh, Flexibility	Advanced

A practical approach: Start with the reverse lunge or the split squat until you’ve mastered the movement. After that, you can significantly improve your coordination with walking lunges and increase the intensity per leg with the Bulgarian split squat. If you want to really target your glutes, the reverse lunge with a slight forward lean of the upper body is your best bet.

Lunges or squats—which is better?

This is a question almost everyone asks when planning their leg workouts. The honest answer: Both are essential, because they complement each other. Squats allow for higher total loads, while lunges improve balance, symmetry, and stability. A 5-week training study by Speirs and colleagues (2016, Journal of Strength and Conditioning Research) compared single-leg training (rear-foot-elevated split squat) with two-leg squat training in junior rugby players. The result: Both methods improved maximum strength, sprinting, and changes of direction to a comparable degree. In practice, this means that single-leg training, such as the lunge, is a fully-fledged alternative and complement to the squat—not just an afterthought.

If you want to combine both, a good approach is to start your day with a heavy two-legged exercise and then follow it up with lunges as a one-legged supplement. This way, you’ll work on both maximum strength and stability. In addition, exercises like the leg press for controlled additional resistance and the hip thrust for targeted glute strength are worth incorporating.

How often and how many repetitions?

Moderate rep ranges have proven effective for building muscle. A reasonable range is:

• Beginner: 2–3 sets of 8–12 repetitions per leg, using only your body weight.
• Advanced: 3–4 sets of 8–12 repetitions per leg using additional weight (dumbbells or a barbell).
• Strength Endurance: Walking lunges for 12–20 steps per leg.

Training one leg twice a week is a good starting point for most people, with at least one rest day in between. Increase the intensity over time (progressive overload)—either by adding more weight, doing more repetitions, or trying a more challenging variation like the Bulgarian split squat.

Buying Guide: The Right Equipment

Lunges require very little equipment—and that’s exactly what makes them so suitable for everyday use. To get started, your body weight is all you need. Once you can easily do 12 clean reps per leg, it’s worth adding extra weight:

• Dumbbells: The most versatile option. Hold them at your sides and gradually increase the weight. Ideal for use at home and at the gym.
• Kettlebells: Whether held in the front or goblet position, they're a great alternative that also works the core.
• Exercise mat: Protects the floor and your back knee, especially during reverse lunges and split squats.

For ambitious home setups or the gym, you’ll find the right racks, barbells, and multi-gyms for strength training in our product range. As an authorized dealer, we provide manufacturer-neutral advice—and with over 5,000 satisfied customers and a 30-day return policy, you can be confident that the equipment will meet your training needs.

Common Mistakes in Lunges

• Step too short: The front knee extends well past the tip of the foot, and the heel lifts off the ground. Solution: Take a longer step and shift your weight to the heel.
• Your upper body leans forward: Your back rounds, and you lose your balance. Keep your chest up and your core engaged.
• Knee turns inward: Make sure your front knee points toward your toes—don't let it turn inward.
• Not deep enough: Many people stop too early. Lower yourself until your back knee is just above the floor.
• Ignore the imbalance: Train the weaker leg first and give both sides the same amount of work.

Frequently Asked Questions

Are lunges bad for your knees?

No, when performed with proper form, lunges are easy on the joints and actually strengthen the muscles that stabilize the knees. If you have sensitive knees, start with the reverse lunge (backward lunge)—it generally puts less strain on the front knee than a forward lunge.

Which is better: lunges or squats?

Neither is inherently better—they complement each other. Studies show that single-leg training achieves comparable strength gains to two-leg training. Use squats for high total load and lunges for balance, symmetry, and real-life application.

How many lunges should I do per leg?

For muscle building, 8–12 repetitions per leg in 2–4 sets is a good range. For strength endurance, you can do 12–20 steps per leg with walking lunges.

Can I do lunges every day?

This isn't ideal for an intense leg workout—your muscles need time to recover. Two to three leg workouts per week, with rest days in between, yield the best results. Light bodyweight lunges for mobility can be done more frequently.

Which option is best for the butt?

The reverse lunge and the Bulgarian split squat with a slight forward lean of the upper body particularly target the gluteus maximus because they emphasize hip extension.

Conclusion

Lunges are one of the most versatile leg exercises there are: They build strength in your thighs and glutes, correct imbalances between the left and right sides, and improve your stability—with or without additional weight, at the gym or at home. Start with a proper form, gradually increase the intensity, and combine them with basic exercises for both legs to create a well-rounded leg workout.

Want to know which equipment is right for your training goals and your space? Contact our team —we’ll give you personalized, manufacturer-independent advice.