What muscles does the Crunch work?

The Crunch primarily works your rectus abdominis. It also recruits your obliques as secondary movers.

What equipment do I need for the Crunch?

None. The Crunch is a bodyweight movement you can do without any equipment.

How many sets and reps should I do for the Crunch?

A typical prescription for the Crunch is 2–3 sets of 12–20 reps. Rest about 30–45 seconds between sets.

Is the Crunch good for beginners?

Yes. The Crunch is a beginner-friendly movement, so it is a good choice when you are starting out, as long as you keep the load light and focus on form.

Exercise library · Core

Crunch.

Basic ab exercise targeting upper rectus abdominis.

Also known as: Ab Crunch, Standard Crunch, Floor Crunch, Basic Crunch

BeginnerBodyweight

The numbers

Sets

2–3

Reps

12–20

Rest

30–45 s

The play-by-play

How to do it.

Step 01
Lie on back with knees bent
Step 02
Place hands lightly behind head
Step 03
Curl upper back off floor
Step 04
Squeeze abs at top
Step 05
Lower slowly

What separates good from great

Pro cues.

Avoid pulling neck
Small controlled range
Exhale as you crunch

Common questions

Questions, answered.

What is the Crunch?: Basic ab exercise targeting upper rectus abdominis.
What muscles does the Crunch work?: The Crunch primarily works your rectus abdominis. It also recruits your obliques as secondary movers.
What equipment do I need for the Crunch?: None. The Crunch is a bodyweight movement you can do without any equipment.
How many sets and reps should I do for the Crunch?: A typical prescription for the Crunch is 2–3 sets of 12–20 reps. Rest about 30–45 seconds between sets.
Is the Crunch good for beginners?: Yes. The Crunch is a beginner-friendly movement, so it is a good choice when you are starting out, as long as you keep the load light and focus on form.

Crunch.

How to do it.

Pro cues.

Questions, answered.

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