Core
The main area this variation is designed to train.
Exercise guide
Ab Crunch Machine
Learn how to do the Ab Crunch Machine exercise, which muscles it works, the equipment you need, and common mistakes to avoid.
Machine
Use this to decide whether the movement fits your current setup.
Intermediate
A quick checkpoint for how simple or technical the movement usually feels.
Core
Secondary support can come from other nearby stabilizers depending on how you perform the movement.
Strength
Movement pattern: core. This is more of an isolation-focused exercise.
Learning and repeating well
Use this page to understand the setup first, then track the movement consistently in Logbook once it fits your program.
Instructions
How to do Ab Crunch Machine
Keep the setup simple, use a controlled pace, and repeat the same movement pattern each rep.
- Select a light resistance and sit down on the ab machine placing your feet under the pads provided and grabbing the top handles. Your arms should be bent at a 90 degree angle as you rest the triceps on the pads provided. This will be your starting position.
- At the same time, begin to lift the legs up as you crunch your upper torso. Breathe out as you perform this movement. Tip: Be sure to use a slow and controlled motion. Concentrate on using your abs to move the weight while relaxing your legs and feet.
- After a second pause, slowly return to the starting position as you breathe in.
- Repeat the movement for the prescribed amount of repetitions.
Benefits
- Builds strength and control through the core region.
- Makes it easier to focus on one area when you want extra practice or volume.
- Gives you a repeatable way to track progress inside Logbook over time.
Common mistakes
- Using more weight or speed than you can control cleanly.
- Cutting the range of motion short and rushing through the reps.
- Changing your body position between reps instead of keeping the movement repeatable.
Variations
More variations will appear here as the public library expands.
Alternatives
Related workouts
Workout templates that use this exercise.
If you want to see this movement inside a more complete training session, start here.
Beginner Gym Workout
A beginner-friendly gym session built around stable machines and simple cable patterns.
View workoutCore Workout
A direct core session built around control, trunk stiffness, and consistent tension.
View workoutBeginner Full Body Workout
A simple full-body workout that teaches the basic movement patterns without burying beginners in volume.
View workoutLow-Impact Workout
A gentle full-body workout that stays lower impact while still training the main muscle groups.
View workoutRelated exercises
More exercises in the same lane.
Use these when you want a similar movement pattern, a different setup, or more exercise options for the same target area.
Ab Roller
Ab Roller is a intermediate strength that mainly trains your core using other.
View exerciseBarbell Ab Rollout
Barbell Ab Rollout is a intermediate strength that mainly trains your core using barbell.
View exerciseBarbell Rollout from Bench
Barbell Rollout from Bench is a intermediate strength that mainly trains your core using barbell.
View exercise3/4 Sit-Up
3/4 Sit-Up is a beginner strength that mainly trains your core using bodyweight.
View exerciseFAQ
Common questions about Ab Crunch Machine.
Use these answers as a practical starting point, then adjust based on your setup, comfort, and goals.
What muscles does Ab Crunch Machine work?
Ab Crunch Machine mainly works the core. It can also involve supporting muscles around the same region depending on your setup and range of motion.
Is Ab Crunch Machine beginner-friendly?
It is listed as intermediate, so newer lifters may want to start lighter or use a simpler variation first.
What equipment do I need for Ab Crunch Machine?
You will usually need Machine for this variation.
How should I progress Ab Crunch Machine?
Start by making the reps smoother and more repeatable. Once the whole set looks controlled, add a small amount of load or one extra rep at a time.
Track this exercise for free in Logbook.
Once the movement is in your plan, use Logbook to record sets, reps, load, and progress without guessing what happened last week.
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