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Half Wipers (Bent Leg)
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Half Wipers (Bent Leg)

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How to Perform

  1. Lie flat on your back with your knees bent at a 90-degree angle and feet lifted off the ground, stacking your knees directly over your hips.
  2. Extend your arms straight out to the sides at shoulder height with your palms facing down for stability.
  3. Engage your core by drawing your navel toward your spine while maintaining a neutral lower back position against the floor.
  4. Keeping your knees together and bent at 90 degrees, slowly lower both knees to the right side as far as possible without lifting your shoulders off the floor.
  5. Exhale as you use your oblique muscles to pull your knees back to the center position, maintaining the 90-degree bend throughout the movement.
  6. Without pausing, continue the motion by lowering your bent knees to the left side while keeping your upper back and shoulders pressed firmly into the floor.
  7. Inhale during the lowering phase and exhale as you return to center, focusing on controlling the movement with your core rather than momentum.
  8. Repeat the full side-to-side motion at a controlled pace, ensuring your shoulder blades remain in contact with the ground throughout the entire exercise.

Important information

  • Keep your shoulders pressed firmly into the ground throughout the entire exercise to isolate the core and protect your lower back.
  • Modify the range of motion by not lowering your legs as far to the sides if you feel any strain in your lower back.
  • Focus on quality of movement rather than speed, especially when first learning this exercise.
  • If you experience any lower back discomfort, try placing your hands under your lower back for additional support.

Exercise Details

Primary Muscles

Abs Obliques

Muscle Groups

Ab exercises

Mechanic

Isolation

Risk Areas

Abs

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Half Wipers with bent legs are an intermediate core exercise that packs a serious punch for your abdominal muscles, particularly targeting your abs and obliques in one fluid movement. This dynamic exercise serves as an excellent addition to various training styles, whether you're incorporating it into a high-intensity interval training session, a bodybuilding routine, or even during active recovery days. The beauty of Half Wipers lies in their efficiency. By keeping your legs bent throughout the movement, you create a slightly modified version that maintains intensity while potentially reducing lower back strain compared to straight-leg variations. This modification makes the exercise more accessible without sacrificing effectiveness, allowing you to focus on quality contractions in your core musculature. 

When performed correctly, Half Wipers create a comprehensive core challenge by combining rotational movement with isometric holds. Your rectus abdominis (the "six-pack" muscles) work to stabilize your upper body while your internal and external obliques engage powerfully during the side-to-side motion. This combination of stability and movement trains your core functionally, mimicking real-world activities that require rotational strength and control. Regular practice of Half Wipers contributes to a more resilient midsection, which translates to better performance in other exercises and daily activities. The rotational component helps develop anti-rotation strength: critical for protecting your spine during uneven loading or unexpected movements in sports and everyday life. 

Additionally, strong obliques contribute to that coveted V-taper physique many fitness enthusiasts strive for. For maximum benefit, focus on quality over quantity, maintaining proper form throughout each repetition. The versatility of Half Wipers makes them valuable for various fitness goals: enhancing core definition for bodybuilders, improving rotational power for athletes, or simply strengthening the midsection for better overall function and posture in daily life.

FAQ - Half Wipers (Bent Leg)

What muscles do Half Wipers (Bent Leg) target?

Half Wipers primarily target your entire core region, with emphasis on the rectus abdominis (six-pack muscles) and internal/external obliques during the rotational movement. Your transverse abdominis also engages isometrically throughout the exercise to stabilize your spine.

How can I modify Half Wipers to make them easier or more challenging?

To make Half Wipers easier, reduce your range of motion or keep your legs higher toward the ceiling. For a greater challenge, extend your legs further (still maintaining the bend), add a small weight between your feet, or increase time under tension by slowing down each repetition.

Are Half Wipers safe for people with lower back issues?

The bent-leg variation is generally safer than straight-leg wipers as it reduces lumbar strain, but anyone with existing back problems should start cautiously. Keep your lower back pressed firmly into the floor throughout the movement and stop if you feel any pain beyond normal muscle fatigue.

What are the most common form mistakes to avoid?

The most common mistakes include rounding your lower back, rotating your hips instead of keeping them square, rushing through the movement, and not hinging properly at the hips. Focus on maintaining a neutral spine, moving with control, and keeping your standing knee slightly soft rather than locked.

How often should I include Half Wipers in my workout routine?

Incorporate Half Wipers 2-3 times weekly within your core training, allowing at least 48 hours for recovery between sessions. Start with 2-3 sets of 8-12 repetitions per side, focusing on quality movement rather than high repetition counts.

Alternative Exercises

Oblique Crunches Floor

Oblique Crunches Floor

Oblique crunches on the floor stand as one of the most effective exercises for targeting the side abdominal muscles, making them a cornerstone movement for anyone looking to develop a well-defined core. Perfect for beginners, this exercise requires no equipment and can be performed virtually anywhere with enough floor space, making it accessible regardless of your fitness level or environment. The beauty of oblique crunches lies in their simplicity and specificity. While traditional crunches primarily engage the rectus abdominis (the "six-pack" muscles), oblique crunches shift the focus to the internal and external obliques—those muscles that run diagonally along the sides of your torso. These muscles play a crucial role not just in aesthetic appeal but in functional strength, rotation, and stability during everyday movements. For those new to fitness or bodybuilding, oblique crunches provide an excellent foundation for core development. They teach proper engagement of the lateral core muscles while minimizing strain on the neck and lower back when performed correctly. This makes them particularly valuable during recovery phases or as part of a cool-down routine, when gentler yet effective exercises are preferred. The versatility of oblique crunches extends beyond just aesthetic goals. Strong obliques contribute significantly to overall core stability, which translates to better performance in nearly all physical activities. They help maintain proper posture, protect the spine during lifting movements, and enhance rotational power for sports like golf, tennis, or baseball. Including oblique crunches in your routine 2-3 times weekly can yield noticeable improvements in core definition and strength within weeks. As your fitness journey progresses, you'll likely discover that these seemingly simple movements form the foundation upon which more advanced core training can be built, making them a timeless exercise that remains relevant regardless of your evolving fitness goals.

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Push-up plank with alternating arm and leg lifts

Push-up plank with alternating arm and leg lifts

The push-up plank with alternating arm and leg lifts represents one of the most comprehensive core challenges in the fitness world, simultaneously engaging multiple muscle groups while testing your stability and coordination. This advanced movement elevates traditional planking by incorporating dynamic limb movements that force your core to work overtime, particularly targeting your abs and glutes while secondary muscles act as crucial stabilizers. When you incorporate this exercise into your routine, you're essentially performing multiple exercises at once: combining the anti-rotational benefits of planks with the destabilizing effect of limb movement, creating an intense core engagement that static exercises simply can't match. The constant fight against rotation as you lift opposing limbs forces your deep transverse abdominis and obliques to fire continuously, while your glutes activate powerfully to maintain proper hip position throughout the movement. This versatile exercise finds its home across multiple training modalities. HIIT enthusiasts appreciate how it elevates heart rate while building functional strength, CrossFit athletes value its scalability and core-strengthening benefits, and bodybuilders recognize its ability to develop detailed abdominal definition and enhance overall core aesthetics. The beauty lies in its adaptability: the intensity can be modified through tempo changes, hold durations, or by adding resistance bands. What makes this movement truly exceptional is how it enhances core function beyond mere appearance. Your core serves as your body's power center, transferring force between upper and lower body while protecting your spine. By strengthening these connections through complex movements like the push-up plank with alternating limb lifts, you're building a resilient foundation that translates to improved performance across all physical activities, from daily movements to specialized athletic endeavors. For those willing to embrace the challenge, this exercise delivers remarkable returns: not just in core strength and definition, but in total-body stability, improved posture, and enhanced movement efficiency that will serve you well in any fitness pursuit you choose to undertake.

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Stability Ball Body Saw

Stability Ball Body Saw

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The Dumbbell V-Up elevates the classic V-Up exercise by adding external resistance, creating a challenging core movement that effectively targets your abdominal muscles and hip flexors simultaneously. This intermediate-level exercise has become a staple in both HIIT circuits and bodybuilding routines for those looking to develop visible core definition and functional strength. Unlike basic core exercises, the Dumbbell V-Up incorporates weight to increase the demand on your rectus abdominis (the "six-pack" muscles) while also engaging the deeper transverse abdominis for stability. The added resistance from the dumbbell forces your core to work harder against gravity, making each repetition more effective at building strength and muscle tone across your midsection. What makes this exercise particularly valuable is how it trains the coordination between your upper and lower body. Your hip flexors activate powerfully to raise your legs while your abs contract to lift your upper body, creating that distinctive "V" position at the top of the movement. This simultaneous action improves the mind-muscle connection and develops balanced core strength that translates to better performance in everyday activities and sports. For those focused on aesthetics in bodybuilding, the Dumbbell V-Up helps create that coveted abdominal definition by targeting the full length of the rectus abdominis. When incorporated into HIIT workouts, it elevates your heart rate while building core endurance, effectively burning calories while strengthening your midsection, a true multitasking exercise. Many fitness enthusiasts appreciate the Dumbbell V-Up because it can be scaled by adjusting the weight, making it adaptable to different fitness levels despite being classified as intermediate. The exercise delivers an intense abdominal contraction at the top position that you can genuinely feel working, providing that satisfying feedback that signals muscle development is occurring with each challenging repetition.

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