What muscles does the 45-Degree Bicycle Twisting Crunch work?

This exercise primarily targets the obliques, helping to define and strengthen the sides of your core. It also engages the upper and lower abs for overall abdominal development, and activates the glutes slightly to help stabilize your body during the movement.

Do I need a 45-degree bench to perform this exercise?

A 45-degree hyperextension bench provides the correct angle and stability for optimal muscle activation. If you don't have access to one, you can modify the exercise on a flat bench with your torso elevated, though the resistance and positioning will not perfectly match the original movement.

Is the 45-Degree Bicycle Twisting Crunch suitable for beginners?

Beginners can try this move with reduced range of motion and slower twisting to build core strength before increasing intensity. Proper form and control are essential, so start with fewer repetitions and focus on keeping the core engaged throughout.

What are common mistakes to avoid with this exercise?

A frequent mistake is rushing the twist, which reduces oblique engagement and can strain the lower back. Avoid pulling on your neck with your hand, and make sure your core not momentum is driving the movement.

How many sets and reps should I do for best results?

For general core conditioning, aim for 3 sets of 12–15 reps per side. If your goal is endurance and stability, increase to 20 reps while maintaining strict form, and rest 30–45 seconds between sets.

What safety tips should I follow when doing the 45-Degree Bicycle Twisting Crunch?

Always secure your feet on the bench and maintain a neutral spine to avoid lower back strain. Engage your abdominal muscles before initiating the twist, and avoid jerking movements that can overextend the torso.

Are there variations or modifications for this exercise?

You can make it easier by bending both knees and limiting the twist, or harder by holding a light plate or medicine ball to increase resistance. Another variation is performing the movement slower with a pause at peak contraction to intensify oblique activation.

45-Degree Bicycle Twisting Crunch

Target Muscles

Primary:

Secondary:

Equipment Required

Bench

Exercise Type

Reps Only

How To Do

Lie sideways on a 45-degree hyperextension bench with your feet secured and your body aligned, one hand behind your head and the other for balance. Extend your top leg straight out, then twist your torso to bring your top elbow toward your opposite knee, engaging your obliques. Keep your core tight and return slowly to the starting position.

Step-by-Step Instructions

Adjust the hyperextension bench to a 45-degree angle and position yourself sideways on the bench, securing your feet under the footpads for stability.
Place your bottom hip and side firmly against the bench pad, ensuring your body is aligned and supported.
Place one hand behind your head and the other hand on your hip or across your chest for balance.
Extend your top leg straight out to the side, keeping it parallel to the floor, while your bottom leg remains secured under the footpads.
Begin the movement by twisting your torso and bringing your top elbow toward your opposite knee, engaging your obliques and abdominal muscles.
Slowly return to the starting position, maintaining control and tension in your core throughout the movement.
Repeat for the desired number of repetitions, then switch sides to work the opposite obliques and core muscles.

Explore more obliques exercises or bench exercises in our exercise library.

Alternative Exercises

Incline Twisting Sit-Up

Obliques

Upper Abs

Bench

Twist Sit-Up

Obliques

Upper Abs

Bench

Dumbbell Side Bend

Obliques

Dumbbell

Kettlebell Double Windmill

Obliques

Kettlebell

Frequently Asked Questions

What muscles does the 45-Degree Bicycle Twisting Crunch work?: This exercise primarily targets the obliques, helping to define and strengthen the sides of your core. It also engages the upper and lower abs for overall abdominal development, and activates the glutes slightly to help stabilize your body during the movement.
Do I need a 45-degree bench to perform this exercise?: A 45-degree hyperextension bench provides the correct angle and stability for optimal muscle activation. If you don't have access to one, you can modify the exercise on a flat bench with your torso elevated, though the resistance and positioning will not perfectly match the original movement.
Is the 45-Degree Bicycle Twisting Crunch suitable for beginners?: Beginners can try this move with reduced range of motion and slower twisting to build core strength before increasing intensity. Proper form and control are essential, so start with fewer repetitions and focus on keeping the core engaged throughout.
What are common mistakes to avoid with this exercise?: A frequent mistake is rushing the twist, which reduces oblique engagement and can strain the lower back. Avoid pulling on your neck with your hand, and make sure your core not momentum is driving the movement.
How many sets and reps should I do for best results?: For general core conditioning, aim for 3 sets of 12–15 reps per side. If your goal is endurance and stability, increase to 20 reps while maintaining strict form, and rest 30–45 seconds between sets.
What safety tips should I follow when doing the 45-Degree Bicycle Twisting Crunch?: Always secure your feet on the bench and maintain a neutral spine to avoid lower back strain. Engage your abdominal muscles before initiating the twist, and avoid jerking movements that can overextend the torso.
Are there variations or modifications for this exercise?: You can make it easier by bending both knees and limiting the twist, or harder by holding a light plate or medicine ball to increase resistance. Another variation is performing the movement slower with a pause at peak contraction to intensify oblique activation.