---
title: "Crunch Frog on Floor"
description: "Begin seated on the floor, leaning back slightly."
locale: en
slug: crunch-frog-on-floor
url: "https://hi.fitness/exercises/crunch-frog-on-floor"
primaryMuscle: "Core"
secondaryMuscles: ["Quads"]
equipment: ["Bodyweight"]
category: "Strength"
format: "Reps"
video: "https://hi.fitness/exercise-media/public/video/a08332fb-crunch-frog-on-floor.mp4"
updatedAt: 2026-07-29T22:30:09+00:00
---
# Crunch Frog on Floor

Begin seated on the floor, leaning back slightly.

## How to do it

1. Begin seated on the floor, leaning back slightly. Your arms should be extended out to the sides at shoulder level, and your legs should be extended straight and parallel just above the floor.
2. Engage your core to simultaneously bring both knees towards your chest while lightly crunching your upper body towards your knees.
3. As you crunch, bring your arms together towards the sides of your knees.
4. Extend your legs back out and open your arms back to the starting position with control. Repeat the movement for the desired number of repetitions.

## Form tips

- Focus on using your abdominal muscles to lift your legs and upper body, avoiding excessive use of momentum.
- Ensure your lower back remains stable and avoid arching it during the movement.
- Breathe steadily throughout the exercise, exhaling as you crunch and inhaling as you extend back out.

## Similar exercises

- [Ab Wheel All the Way Out](https://hi.fitness/exercises/ab-wheel-all-the-way-out) - Core · Other
- [Ball Sit-up](https://hi.fitness/exercises/ball-sit-up) - Core · Stability ball
- [Ab Mat Sit-up](https://hi.fitness/exercises/ab-mat-sit-up) - Core · Mat
- [3-4 Sit-up](https://hi.fitness/exercises/3-4-sit-up) - Core
- [Assisted Sit-up](https://hi.fitness/exercises/assisted-sit-up) - Core
- [Band Bicycle Crunch](https://hi.fitness/exercises/band-bicycle-crunch) - Core · Resistance band
- [High Resistance Band Kneeling Crunch](https://hi.fitness/exercises/high-resistance-band-kneeling-crunch) - Core · Resistance band
- [Band Kneeling Crunch](https://hi.fitness/exercises/band-kneeling-crunch) - Core · Resistance band