Learn how to do flutter kicks with perfect form, avoid common mistakes, and discover the best variations to build a strong, defined core.
Flutter kicks are one of the most effective bodyweight exercises for developing core strength, improving endurance, and building lower abdominal definition. Whether you are training for military fitness tests, calisthenics, or athletic performance, mastering flutter kicks is essential.
What Are Flutter Kicks?
Flutter kicks are a bodyweight core exercise where you lie on your back and alternate lifting your legs up and down in a controlled kicking motion.
This movement primarily targets the lower abs while also engaging the hip flexors and stabilizing muscles.
Flutter kicks are commonly used in:
- Military fitness training
- Core strengthening workouts
- Endurance and conditioning programs
- Athletic performance training
Unlike many ab exercises, flutter kicks build core endurance and control, which is crucial for real-world performance.
Benefits of Flutter Kicks
• Strengthens lower abdominal muscles
• Improves core endurance
• Enhances hip flexor strength
• Supports better posture and stability
• Builds muscular control and coordination
• Essential for military and tactical fitness tests
Few exercises challenge the lower abs as effectively as flutter kicks.
Muscles Worked in Flutter Kicks
Primary Muscles
• Lower Abdominals
• Rectus Abdominis
Secondary Muscles
• Hip Flexors
• Obliques
• Quadriceps
• Lower Back Stabilizers
This makes flutter kicks highly effective for building a strong, stable core.
How to Do Flutter Kicks (Step-by-Step)
Step 1: Lie Flat on the Ground
Lie on your back with your legs fully extended and arms placed by your sides or under your hips for support.
Tip: Keep your lower back pressed into the ground.
Step 2: Lift Your Legs Slightly Off the Ground
Raise both legs a few inches off the ground.
• Keep legs straight
• Toes pointed forward
• Core engaged
This is your starting position.
Step 3: Begin the Kicking Motion
Alternate lifting one leg up while the other lowers slightly.
• Keep movements small and controlled
• Do not let your heels touch the ground
Step 4: Maintain Core Engagement
Throughout the movement:
• Keep your core tight
• Lower back stays pressed down
• Avoid arching your spine
Step 5: Control the Movement
Continue alternating kicks in a steady rhythm.
Avoid rushing — controlled reps build more strength and endurance.
Flutter Kicks Form Checklist
Use this checklist to ensure perfect form:
Keep your lower back pressed into the ground
Engage your core throughout
Use small, controlled kicks
Keep legs straight
Avoid letting heels touch the ground
Perfect form builds stronger abs and prevents injury.
Common Flutter Kicks Mistakes
Arching the Lower Back
Problem: Reduces core activation and causes strain.
Fix: Keep your lower back pressed firmly into the ground.
Kicking Too Fast
Problem: Reduces control and effectiveness.
Fix: Use a slow, controlled tempo.
Raising Legs Too High
Problem: Shifts focus away from lower abs.
Fix: Keep legs low to maximize core tension.
Bending the Knees
Problem: Reduces tension on the abs.
Fix: Keep legs straight throughout the movement.
Not Engaging the Core
Problem: Turns it into a leg exercise.
Fix: Actively tighten your abs during every rep.
Flutter Kick Variations
Once you master basic flutter kicks, these variations can increase difficulty and effectiveness.
Scissor Kicks
Scissor kicks involve crossing your legs over each other, increasing core engagement.
How to Do Scissor Kicks
• Lift legs slightly off the ground
• Cross one leg over the other alternately
• Keep movements controlled
Elevated Flutter Kicks
This variation increases difficulty by raising your upper body.
How to Do Elevated Flutter Kicks
• Lift your shoulders slightly off the ground
• Perform flutter kicks while holding the crunch position
• Keep your core tight
Weighted Flutter Kicks
Adds resistance for increased strength.
How to Do Weighted Flutter Kicks
• Place light ankle weights or hold a small weight between your feet
• Perform controlled kicks
• Maintain strict form
Bent-Knee Flutter Kicks (Beginner Variation)
Easier version for beginners.
How to Do Bent-Knee Flutter Kicks
• Slightly bend your knees
• Perform smaller kicks
• Focus on core engagement
Final Thoughts
Flutter kicks are one of the most powerful core exercises you can master.
They build:
• Lower ab strength
• Core endurance
• Hip flexor strength
• Stability and control
• Functional athletic performance
Progress may feel challenging at first, especially for beginners. However, with consistent training and proper form, your core strength will steadily improve. Learn more about Core Workouts here.
Focus on control, not speed.
A warrior trains the core with discipline — not shortcuts.
Flutter Kicks FAQ
Q1: How long should beginners do flutter kicks?
Beginners can start with 20–30 seconds per set. Gradually increase to 45–60 seconds as strength improves.
Q2: Are flutter kicks good for abs?
Yes, flutter kicks are excellent for targeting the lower abs and building core endurance.
Q3: How often should I do flutter kicks?
You can train flutter kicks 3–5 times per week as part of your core routine. Ensure proper recovery and avoid overtraining.