Reverse Crunch vs Seated Knee Up
Which one fits your Core workout plan?
Contents
Planfit users log Seated Knee Up more often — 4,601 sessions vs 868. Compare Core form, muscles worked, and when to use each.
Compare the benefits of Reverse Crunch and Seated Knee Up and pick the one that fits your Core workout.
Reverse Crunch vs Seated Knee Up: Which Do Planfit Users Choose?
Based on randomly selected data from 1 million completed workouts, Planfit users log Seated Knee Up more often — 4,601 sessions compared to 868 for Reverse Crunch.
What most people do isn't always what fits you. Reverse Crunch and Seated Knee Up differ in the muscles they work, the equipment they need, and how hard they are to learn — the comparison below covers each.
How Reverse Crunch and Seated Knee Up Differ
| What differs | Reverse Crunch | Seated Knee Up |
|---|---|---|
| Difficulty | 2 of 5 | 2 of 5 |
| Sessions logged by Planfit users | 868 sessions | 4,601 sessions |
How to Do Reverse Crunch
Reverse Crunch Muscles Worked: Core
Form
- 1. Bend your knees so that they are perpendicular to the ground while lying on the floor.
- 2. Engage your abs as if your knees are touching your chest and lift your hips up.
- 3. Hold this position for about 1 second, then slowly return to the starting position.
Coach's Tips
- Be careful not to lift your lower back excessively off the floor, and focus on engaging your abdominal muscles.
For a full Reverse Crunch guide with alternatives and benefits, see the Reverse Crunch exercise guide.
How to Do Seated Knee Up
Seated Knee Up Muscles Worked: Core
Form
- 1. Lift your lower body so that your knees and chest come closer together.
- 2. Allow your upper body to naturally lean forward so that your core can contract.
- 3. Slowly return to the starting position.
Coach's Tips
- If it's too difficult, try proceeding with your knees bent.
For a full Seated Knee Up guide with alternatives and benefits, see the Seated Knee Up exercise guide.
Frequently Asked Questions
Which is better for Core, Reverse Crunch or Seated Knee Up?
Planfit users log Seated Knee Up more often — 4,601 sessions against 868 for Reverse Crunch. Both train Core, so pick the one that matches the equipment you have and the muscles you want to load.
What equipment do Reverse Crunch and Seated Knee Up need?
Reverse Crunch needs bodyweight only, and Seated Knee Up needs bodyweight only.
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