Negative Crunch
Build a stronger core! The Negative Crunch focuses on the lowering phase, maximizing muscle engagement for serious ab definition.
The Negative Crunch mainly works the core. No equipment needed: it uses just your bodyweight.
Optional Equipment

Negative Crunch Muscles Worked
Primary
Abdominals (rectus abdominis)
Negative Crunch Variations and Alternatives
How to do the Negative Crunch
Lie down on your back on a mat with your knees bent and feet flat on the floor. Place your hands lightly behind your head without interlocking your fingers.
Engage your core by pulling your belly button toward your spine, and exhale as you perform a standard crunch, lifting your shoulders off the mat and bringing your rib cage closer to your pelvis.
Hold the crunch position for a moment at the top, ensuring that your abdominal muscles are contracted.
Slowly and with control, begin to lower your upper body back to the starting position, but emphasize a slow and extended negative phase (the lowering phase). It should take about 3-5 seconds to fully return to the starting position.
As you reach the bottom, do not let your head and shoulders completely relax on the mat. Keep tension in your abs as you immediately transition into the next repetition.
Repeat the movement for the desired number of repetitions and sets, maintaining a controlled pace and focusing on the muscle contraction throughout the exercise.
The negative crunch is effective for building abdominal strength and endurance due to the emphasized eccentric contraction during the lowering phase. This can promote muscle growth and strength gains in the abdominal area.
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Negative Crunch FAQs
What muscles does the Negative Crunch work?
The Negative Crunch mainly works the core. The main muscles are the rectus abdominis.
What equipment do you need for the Negative Crunch?
None. The Negative Crunch is a bodyweight exercise, so you can do it anywhere.
What are some Negative Crunch variations and alternatives?
Similar exercises include the Cocoon Crunch, Crunch, Decline Reverse Crunch and Decline Crunch.
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