Alternate heel touchers, also known as penguin crunches, are an excellent beginner-friendly abdominal exercise that targets the obliques and the rectus abdominis. By elevating the shoulder blades and laterally flexing the spine to touch each heel, you engage the lateral core muscles in a safe, controlled manner. Since it requires absolutely no equipment and minimal space, it's a staple in home workouts and core conditioning circuits.
Benefits
• Excellent for targeting the external obliques.
• Keeps constant tension on the upper abdominals.
• Beginner-friendly with a very low risk of injury.
• No equipment required.
Common Mistakes
• Resting the neck on the floor between reps.
• Moving the hips or legs to reach the heels instead of using the core.
• Rushing the movement without feeling the oblique contraction.
• Straining the neck by pulling the chin to the chest.
Pro Tips
To increase the difficulty, move your feet further away from your glutes. This forces you to crunch harder and bend further to reach your heels.
Muscle Anatomy
The primary muscles worked are the external and internal obliques via lateral flexion. The rectus abdominis acts as a stabilizer to keep the shoulder blades elevated off the floor.
Exercise Variations
Russian twists or lying side crunches.
Beginner Tips
Keep your gaze fixed on the ceiling rather than your knees to maintain a neutral neck position and prevent cervical strain.
