Male model ex_FE5VDI

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Waist · Body Weight

Crunch Frog on Floor

intermediatestrength

Crunch Frog on Floor is an intermediate isolation strength exercise that works the abs (waist), with the hip flexors and obliques assisting. It needs no equipment beyond your own body weight. A typical prescription is 3 sets of 10-15 reps, and it burns about 5.5 calories per minute.

Target
Abs
Body part
Waist
Equipment
Body Weight
Category
Strength
Mechanic
Isolation
Force
Push
Sets × reps
3 × 10-15
Calories / min
≈ 5.5 kcal

Primary muscles

  • Abdominals · Rectus Abdominis

Secondary muscles

  • Hip Flexors · Iliopsoas
  • Obliques · External Obliques, Internal Obliques

How to do Crunch Frog on Floor

  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.

Crunch Frog on Floor alternatives

More abs exercises

Crunch Frog on Floor FAQ

What muscles does Crunch Frog on Floor work?

Crunch Frog on Floor mainly works the abs in the waist (Rectus Abdominis). The hip flexors and obliques work as secondary muscles.

What equipment do you need for Crunch Frog on Floor?

None. Crunch Frog on Floor is a body weight exercise, so you can do it at home or anywhere with enough space.

How many sets and reps of Crunch Frog on Floor should I do?

Start with 3 sets of 10-15 reps. Pick a load or variation where the last one or two reps are hard but your form stays clean.

Is Crunch Frog on Floor good for beginners?

It's rated intermediate. Beginners can work up to it once they control simpler waist exercises.

How many calories does Crunch Frog on Floor burn?

About 5.5 calories per minute for a person of around 70 kg, based on a MET value of 4.5. Ten minutes of work is roughly 55 calories; heavier people burn more.

What is a good alternative to Crunch Frog on Floor?

Other exercises for the abs include Crunch With Medicine Ball, Band Bicycle Crunch, Dumbbell Suitcase Crunch and Crunch (On Bosu Ball).

For developers

Use Crunch Frog on Floor in your app

Get this exercise and 1,900+ others from the WorkoutX API: 720p MP4 animations at 30 fps without the watermark, male and female models, muscles, instructions and form tips in 7 languages.

# One request returns the exercise and its 720p media links
curl "https://api.workoutxapp.com/v2/exercises/ex_FE5VDI" \
  -H "X-WorkoutX-Key: YOUR_API_KEY"

{
  "id": "ex_FE5VDI",
  "name": "Crunch Frog on Floor",
  "model": "male",
  "target": "Abs",
  "equipment": "Body Weight",
  "media": {
    "mp4": "https://…/ex_FE5VDI/mp4-720.mp4?…",
    "poster": "https://…/ex_FE5VDI/poster.jpg?…"
  }
}