Cross Body Crunch vs Seated Knee Up
Which one fits your Core workout plan?
Contents
Planfit users log Seated Knee Up more often — 9,913 sessions vs 2,461. Compare Core form, muscles worked, and when to use each.
Compare the benefits of Cross Body Crunch and Seated Knee Up and pick the one that fits your Core workout.
Cross Body 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 — 9,913 sessions compared to 2,461 for Cross Body Crunch.
What most people do isn't always what fits you. Cross Body 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 Cross Body Crunch and Seated Knee Up Differ
| What differs | Cross Body Crunch | Seated Knee Up |
|---|---|---|
| Difficulty | 2 of 5 | 2 of 5 |
| Sessions logged by Planfit users | 2,461 sessions | 9,913 sessions |
How to Do Cross Body Crunch
Cross Body Crunch Muscles Worked: Core
Form
- 1. Lie down looking at the sky, bend your knees, and stretch your arms and fingertips to position them over your knees.
- 2. While engaging your abdominal muscles, lift your upper body and simultaneously poke your fingertips to the outside of your thighs.
- 3. Without releasing tension in your abdominal muscles, slowly return to the starting position.
- 4. As you lift your upper body, poke your fingertips to the outside of the opposite thigh as well.
Coach's Tips
- 1. When twisting your body, be careful not to pull your neck, and move slowly.
- 2. Use your abdominal muscles to keep your lower back from excessively lifting off the floor.
For a full Cross Body Crunch guide with alternatives and benefits, see the Cross Body 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, Cross Body Crunch or Seated Knee Up?
Planfit users log Seated Knee Up more often — 9,913 sessions against 2,461 for Cross Body Crunch. Both train Core, so pick the one that matches the equipment you have and the muscles you want to load.
What equipment do Cross Body Crunch and Seated Knee Up need?
Cross Body Crunch needs bodyweight only, and Seated Knee Up needs bodyweight only.
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