MWC
AbdominalsBody OnlyIntermediate

Frog Sit-Ups

Frog Sit-Ups — starting positionFrog Sit-Ups — end position
Primary muscles
Abdominals
Equipment
Body Only
Level
Intermediate
Type
Isolation · Pull

How to do the Frog Sit-Ups

  1. 1

    Lie with your back flat on the floor (or exercise mat) and your legs extended in front of you.

  2. 2

    Now bend at the knees and place your outer thighs by the floor (or mat) as you make the soles of your feet touch each other.

  3. 3

    Now try pushing both soles and bringing them up as near you as possible while you keep the outer thighs on the floor (or at least almost touching it). Tip: In this position your legs should create a diamond shape.

  4. 4

    Now, cross your arms in front of you by touching the opposite shoulders. This will be your starting position.

  5. 5

    As you exhale flatten your lower back to the floor while curling the torso upwards. Tip: This will be like performing the first 1/4 movement of a sit up. Hold at the top position for a second.

  6. 6

    As you inhale, slowly lower back to the starting position.

  7. 7

    Repeat for the recommended amount of repetitions.

How to program the Frog Sit-Ups

Sets and reps

As an isolation movement, the Frog Sit-Ups is best trained with moderate loads and higher reps: 2–4 sets of 10–15 reps with 60–90 seconds of rest. Chasing heavy weight on isolation work usually degrades form before it builds muscle — prioritize a full range of motion and a controlled negative. Program it after your compound lifts.

Progression

The Frog Sit-Ups is rated intermediate. Earn the right to progress: only add load when every rep of every set moves with consistent technique. Video your sets or use a mirror to check positions, and use double progression (add reps to the top of your range, then add load and reset) rather than jumping weight.

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Frequently asked questions

What muscles does the Frog Sit-Ups work?

The Frog Sit-Ups primarily targets the Abdominals.

What equipment do I need for the Frog Sit-Ups?

You need Body Only. Difficulty level: Intermediate.

How many sets and reps of the Frog Sit-Ups should I do?

Do 2–4 sets of 10–15 reps with 60–90 seconds rest, focusing on a full range of motion and controlled tempo rather than maximum load.

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