Sit Up vs Seated Knee Up
Which one fits your Core workout plan?
Contents
Planfit users log Seated Knee Up more often — 9,913 sessions vs 3,693. Compare Core form, muscles worked, and when to use each.
Compare the benefits of Sit Up and Seated Knee Up and pick the one that fits your Core workout.
Sit Up 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 3,693 for Sit Up.
What most people do isn't always what fits you. Sit Up 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 Sit Up and Seated Knee Up Differ
| What differs | Sit Up | Seated Knee Up |
|---|---|---|
| Difficulty | 2 of 5 | 2 of 5 |
| Sessions logged by Planfit users | 3,693 sessions | 9,913 sessions |
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.
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, Sit Up or Seated Knee Up?
Planfit users log Seated Knee Up more often — 9,913 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 Sit Up and Seated Knee Up need?
Sit Up needs bodyweight only, and Seated Knee Up needs bodyweight only.
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