How to do a Decline Crunch
Reviewed by Jim Parker, CPT, B.A. Kinesiology
Decline Bench
Workouts with Decline Crunch
Target muscles worked
Instructions for Proper Form
Decline Crunch is a more challenging variation on the more standard crunch. Similar to a standard Crunch, this is a bodyweight core exercise. The use of a decline bench forces you to lay back further than you can on a flat surface. This helps improve muscle activation.
- Secure your legs at the end of a decline bench lie down on your back.
- Place your hands behind your head and keep your lower back against the bench throughout the exercise.
- Flex your abdomen to bring the bottom of your ribcage in towards your belly button while slightly tucking the chin until your upper back is off of the bench.
- Keep tension in your abdomen as you lower your shoulders back to the bench.
Common Form Mistakes
Sitting Up Too Far
Crunches are designed so you only raise your shoulder blades, not your entire torso. While it isn’t ineffective or dangerous to raise your torso off the ground, it isn’t a crunch. Focus on contracting your abs to get just your shoulders elevated.
Sets & Reps Calculator
Average Decline Crunch standards by male, female, gender, weight, age and height
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Alternatives & Variations to Decline Crunch
1. Crunches
94 mSCORESWAPPED 3,253 TIMESCrunches are one of the most common exercises out there. It’s an easy to perform, bodyweight exercise that targets your abdominals. Crunches are very similar to Sit Ups, however, instead of raising your upper body all the way into a near sitting position, you only raise your shoulder blades off the ground. This is a great exercise for beginners looking to build core strength.
2. Ab Crunch Machine
96.1 mSCORESWAPPED 2,798 TIMESAb Crunch Machine is a variation of Crunches performed with a machine. Unlike standard Crunches, the use of a machine gives you more control over your resistance. In addition, the machine will restrict your range of motion allowing you to focus more on exertion than stabilizing the movement.
- Intermediate
- Abs
- Ab Crunch Machine
3. Decline Sit Up
77.6 mSCORESWAPPED 2,135 TIMESDecline Sit Up is a variation on the more common Sit Up. By laying back on a decline bench, you can keep more tension on your abdominals at the top of the movement. This is a great exercise for adding a bit more of a challenge to your Sit Ups.
- Intermediate
- Abs
- Decline Bench
4. Bicycle Crunch
91.8 mSCORESWAPPED 2,062 TIMESBicycle Crunch is a more difficult version of a standard crunch. Instead of raising your torso off the ground for each rep, you keep your torso off the ground, and your core engaged. By cycling your legs, you add more instability to the movement, which leads to better core activation.
5. Plank
92.8 mSCORESWAPPED 1,906 TIMESPlanks are one of the most common core exercises out there. This is a bodyweight exercise that is performed for time rather than reps. Planks don’t require any movement, instead they force you to place yourself in a position that requires you to engage your core, and maintain that muscle activation for the duration of the exercise. This is a great way to help build strength and stability in a way that will translate to a variety of other exercises, and your daily life.
6. Leg Raise
96.5 mSCORESWAPPED 1,736 TIMESLeg Raise is a simple bodyweight core exercise that involves laying on the ground and suspending your legs in the air. While your core does play a significant role in raising your legs, the real benefit comes from controlling their descent back to the floor.
7. Russian Twist
96.2 mSCORESWAPPED 1,575 TIMESRussian Twist is one of the more common core exercises. This exercise targets multiple muscles in your core, but the reason for including this exercise is usually to target your obliques. By raising your feet off the ground, engaging your core, and twisting to each side, you can better target this specific muscle in your core.
8. Cable Crunch
88.8 mSCORESWAPPED 1,424 TIMESCable Crunch is a variation on the more standard Crunch. Unlike Crunches, this is a weighted exercise that does not have you laying on your back. Instead of using your bodyweight for resistance, you use a cable machine. This gives you more control over your resistance, as well as more control over the direction that resistance is coming from.