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Alternating Leg Lifts

Exercise Overview

Alternating Leg Lifts are an effective bodyweight core exercise that strengthens the abdominal muscles while improving hip stability, muscular endurance and lower-body control. By lifting one leg at a time while maintaining a stable torso, the exercise creates continuous tension throughout the core and places particular emphasis on the lower portion of the rectus abdominis.

Unlike double leg raises, alternating the legs reduces the load on the lower back, making the exercise suitable for a wider range of fitness levels. It also encourages better pelvic control and helps identify strength or mobility differences between the left and right sides of the body.

Because no equipment is required, Alternating Leg Lifts are ideal for home workouts, gym sessions, circuit training, rehabilitation programmes and athletic conditioning. They are commonly included in abdominal workouts to improve core stability, balance and muscular endurance.

Quick Facts

Primary Muscle

Rectus Abdominis

Secondary Muscles

• Hip Flexors
• Transverse Abdominis
• External Obliques
• Internal Obliques

Stabilising Muscles

• Erector Spinae
• Quadriceps
• Gluteus Medius
• Gluteus Maximus
• Pelvic Stabilising Muscles

Exercise Type

Isolation

Movement Pattern

Hip Flexion

Core Stabilisation

Equipment

Bodyweight

Difficulty

Beginner

Mechanics

Isolation

Force Type

Core Stabilisation

Muscles Worked

Primary Muscle

• Rectus Abdominis

Secondary Muscles

• Iliopsoas (Hip Flexors)
• Transverse Abdominis
• External Obliques
• Internal Obliques

Stabilising Muscles

• Erector Spinae
• Quadriceps
• Gluteus Medius
• Gluteus Maximus
• Deep Pelvic Stabilising Muscles

Alternating Leg Lifts challenge the abdominal muscles to maintain spinal stability while each leg moves independently, helping develop better control and muscular coordination.

How to Perform Alternating Leg Lifts

1. Lie flat on your back on an exercise mat.
2. Place your arms alongside your body or underneath your hips for additional support.
3. Keep both legs extended and together.
4. Tighten your abdominal muscles and press your lower back into the floor.
5. Raise one leg until it reaches approximately a 45 to 90-degree angle, depending on your flexibility.
6. Slowly lower the leg back towards the floor without allowing it to touch down completely.
7. As one leg lowers, begin lifting the opposite leg.
8. Continue alternating legs in a smooth, controlled rhythm.
9. Keep your pelvis stable throughout the movement.
10. Complete the desired number of repetitions before resting.

The movement should remain slow and controlled, with the abdominal muscles maintaining constant tension throughout every repetition.

Video

Breathing Technique

• Inhale before lifting the first leg.
• Exhale as you raise each leg.
• Inhale while lowering the leg under control.
• Maintain steady breathing throughout the set.

Avoid holding your breath, particularly during longer sets.

Benefits

Strengthens the Core

Alternating Leg Lifts effectively target the abdominal muscles while improving overall core stability and endurance.

Improves Pelvic Control

Moving one leg at a time teaches the core to stabilise the pelvis, an important skill for both athletic performance and everyday movement.

Reduces Lower Back Stress

Compared with double leg raises, alternating the legs decreases spinal loading, making the exercise more accessible for many people.

Enhances Muscular Endurance

The continuous alternating motion places prolonged tension on the abdominal muscles, helping build endurance.

Requires No Equipment

The exercise can be performed virtually anywhere, making it an excellent option for home workouts and travel.

Common Mistakes

Allowing the Lower Back to Arch

If your lower back lifts away from the floor, reduce the height of the leg movement or bend your knees slightly.

Moving Too Quickly

Rapid repetitions reduce muscle activation and often rely on momentum.

Swinging the Legs

Control both the lifting and lowering phases to maximise effectiveness.

Raising the Head Excessively

Keep your head relaxed against the floor unless performing a deliberate progression.

Allowing the Feet to Rest

Maintain continuous muscular tension by avoiding contact with the floor between repetitions.

Expert Tips

• Keep your abdominal muscles engaged throughout the exercise.
• Press your lower back firmly into the floor before each repetition.
• Perform slow, controlled movements.
• Point your toes naturally without excessive tension.
• Focus on smooth transitions between legs.
• Prioritise quality over speed.

Variations

• Bent Knee Alternating Leg Lifts
• Straight Leg Alternating Leg Lifts
• Weighted Alternating Leg Lifts
• Resistance Band Leg Lifts
• Hanging Alternating Leg Raises
• Stability Ball Leg Lifts
• Flutter Kicks
• Scissor Kicks

Alternative Exercises

• Double Leg Raises
• Flutter Kicks
• Bicycle Crunches
• Reverse Crunch
• Dead Bug
• Hollow Body Hold
• Mountain Climbers
• Plank
• Hanging Knee Raise
• Hanging Leg Raise

Programming

Core Strength

• 3–4 sets
• 10–15 repetitions per leg
• 45–60 seconds rest

Muscular Endurance

• 2–4 sets
• 20–30 repetitions per leg
• 30–45 seconds rest

Circuit Training

• 30–45 seconds per round
• Perform with minimal rest between exercises

Suitable For

Alternating Leg Lifts are suitable for:

• Beginners
• Intermediate exercisers
• Home workouts
• Core strengthening programmes
• Circuit training
• Athletic conditioning
• Functional fitness
• Rehabilitation programmes (when appropriate)

Avoid If

You may need to modify or avoid this exercise if you have:

• Acute lower back pain
• Hip flexor injuries
• Recent abdominal surgery
• Severe spinal conditions

If your lower back becomes painful during the movement, reduce the range of motion or choose an easier variation until core strength improves.

Frequently Asked Questions

What muscles do Alternating Leg Lifts work?

Alternating Leg Lifts primarily work the rectus abdominis while also engaging the hip flexors, obliques, transverse abdominis and several stabilising muscles throughout the core.

Are Alternating Leg Lifts easier than double leg raises?

Yes. Lifting one leg at a time generally reduces the load on the abdominal muscles and lower back, making the exercise more suitable for beginners.

Should my legs stay straight?

Straight legs increase the difficulty by lengthening the lever. Beginners may slightly bend their knees until sufficient strength develops.

How many repetitions should I perform?

Most people benefit from performing 10 to 15 repetitions per leg for strength or higher repetitions for muscular endurance.

Why does my lower back lift off the floor?

This usually indicates that the abdominal muscles are struggling to stabilise the pelvis. Reduce the height of the lift, bend your knees slightly or choose an easier variation until strength improves.

Related Exercises

• Flutter Kicks
• Bicycle Crunches
• Reverse Crunch
• Double Leg Raises
• Dead Bug
• Hollow Body Hold
• Mountain Climbers
• Plank
• Hanging Knee Raise
• Scissor Kicks

Exercise Summary

Alternating Leg Lifts are an excellent bodyweight exercise for strengthening the abdominal muscles while improving pelvic stability, muscular endurance and lower-body control. The alternating movement creates continuous tension throughout the core while reducing stress on the lower back compared with traditional double leg raises. Suitable for beginners through to advanced exercisers, this exercise provides an effective addition to home workouts, gym sessions and comprehensive core training programmes.