Weighted Crunch (VERSION 2)
- Target muscle
- Rectus Abdominis
- Synergist muscles
- Obliques
- Equipment
- Weighted
- Body part
- Waist
- Type
- Strength
The weighted crunch (version 2) is a core strength exercise that directly targets the rectus abdominis, with the obliques contributing to spinal flexion and trunk control. By adding external load, it provides greater resistance than a bodyweight crunch, making it an effective choice for progressive overload of the abdominal muscles.
How to do the Weighted Crunch (VERSION 2)
- 1Lie flat on your back with your knees bent and feet flat on the floor, hip-width apart.
- 2Hold a weight plate or dumbbell against your chest or extended overhead, depending on the variation.
- 3Draw your chin slightly toward your chest and press your lower back gently into the floor.
- 4Brace your core and exhale as you curl your shoulder blades off the floor, flexing through the upper abdomen.
- 5Lift only until your shoulder blades clear the floor — do not pull your head forward or sit fully upright.
- 6Hold the top position for a brief pause, keeping tension in the rectus abdominis.
- 7Inhale as you slowly lower your shoulder blades back to the floor under control.
- 8Reset your core brace and repeat for the desired number of reps.
Form tips
- Keep the movement short and controlled — the range of motion is small; focus on muscular contraction rather than how high you rise.
- Avoid pulling on your neck. If holding the weight at your chest, let your arms support the load, not your cervical spine.
- Exhale forcefully at the top of each rep to deepen the abdominal contraction.
- Progress load gradually — even a small increase in weight adds significant tension on the abs.
Common mistakes
- Using momentum to swing up rather than contracting the abs, which reduces muscular engagement and can strain the neck.
- Pulling the head and neck forward with your hands, placing excessive stress on the cervical spine instead of loading the abs.
- Sitting all the way up past the point where the lower back leaves the floor, which transfers tension away from the rectus abdominis to the hip flexors.
- Holding your breath throughout the set, which limits intra-abdominal pressure control and reduces the quality of each rep.
Frequently asked questions
What muscles does the weighted crunch work?
The weighted crunch primarily targets the rectus abdominis — the muscle responsible for spinal flexion — with the obliques acting as synergists to stabilize the trunk throughout the movement.
Where should I hold the weight during a weighted crunch?
Holding the weight at your chest is the most common position and easier to control. Extending it overhead increases the lever arm and makes each rep harder, so start at the chest and progress from there.
How is the weighted crunch different from a regular crunch?
A weighted crunch adds external resistance, increasing the demand on the rectus abdominis and allowing for progressive overload. This makes it more effective for building abdominal strength and size compared to bodyweight crunches alone.
How many reps should I do for weighted crunches?
For strength and hypertrophy, 3–4 sets of 8–15 reps with a challenging weight works well. Choose a load that makes the last few reps difficult while still allowing full control throughout the movement.
Is the weighted crunch safe for people with lower back issues?
Crunches involve only a small range of spinal flexion, which many people tolerate well, but those with existing lower back problems should consult a healthcare professional before adding load and ensure the lower back stays in contact with the floor throughout.
