Crunch vs Sit Up
Which one fits your Core workout plan?
Contents
Planfit users log Crunch more often — 29,245 sessions vs 3,693. Compare Core form, muscles worked, and when to use each.
Compare the benefits of Crunch and Sit Up and pick the one that fits your Core workout.
Crunch vs Sit Up: Which Do Planfit Users Choose?
Based on randomly selected data from 1 million completed workouts, Planfit users log Crunch more often — 29,245 sessions compared to 3,693 for Sit Up.
What most people do isn't always what fits you. Crunch and Sit Up differ in the muscles they work, the equipment they need, and how hard they are to learn — the comparison below covers each.
How Crunch and Sit Up Differ
| What differs | Crunch | Sit Up |
|---|---|---|
| Difficulty | 1 of 5 | 2 of 5 |
| Sessions logged by Planfit users | 29,245 sessions | 3,693 sessions |
How to Do Crunch
Crunch Muscles Worked: Core
Form
- 1. Please lift your upper body while keeping your back straight.
- 2. Slowly return to the starting position.
Coach's Tips
- 1. If you lift your upper body excessively, it can strain your lower back, so please lift your upper body without raising your back.
- 2. If your neck hurts, support your head with your hands and relax your neck while proceeding.
For a full Crunch guide with alternatives and benefits, see the Crunch exercise guide.
How to Do Sit Up
Sit Up Muscles Worked: Core
Form
- 1. Please lift your upper body so that you can sit up straight.
- 2. Slowly return to the starting position.
Coach's Tips
- 1. If you have pain in your lower back, avoid sit-ups and substitute with crunches.
- 2. When lifting your upper body, be careful not to overextend your lower back or pull your neck too much.
For a full Sit Up guide with alternatives and benefits, see the Sit Up exercise guide.
Frequently Asked Questions
Which is better for Core, Crunch or Sit Up?
Planfit users log Crunch more often — 29,245 sessions against 3,693 for Sit Up. Both train Core, so pick the one that matches the equipment you have and the muscles you want to load.
What equipment do Crunch and Sit Up need?
Crunch needs bodyweight only, and Sit Up needs bodyweight only.
Which is easier to start with?
Crunch is the easier place to start. Move to Sit Up once your form holds up.
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