Reverse Crunch

🎯 Abdominals🏋️ Body onlyBeginnerIsolation

How to do the reverse crunch

  1. Lie down on the floor with your legs fully extended and arms to the side of your torso with the palms on the floor. Your arms should be stationary for the entire exercise.
  2. Move your legs up so that your thighs are perpendicular to the floor and feet are together and parallel to the floor. This is the starting position.
  3. While inhaling, move your legs towards the torso as you roll your pelvis backwards and you raise your hips off the floor. At the end of this movement your knees will be touching your chest.
  4. Hold the contraction for a second and move your legs back to the starting position while exhaling.
  5. Repeat for the recommended amount of repetitions.

Muscles worked

The prime movers are the rectus abdominis and the obliques, which flex the trunk forward and resist it being pulled into extension or twisted out of line.

Every exercise for:Abdominals

How this movement works

One joint changes angle and the resistance travels toward you along a single arc. Nothing is positioned to help, so tension stays where you aimed it and the usable load drops sharply against a multi-joint pull for the same muscle. Protect the range of motion; buying weight by shortening the arc defeats the point.

It is filed under strength: produce force against resistance for a countable number of repetitions, and progress the resistance over time.

What you need

No equipment at all. The resistance is your own bodyweight, so you progress by changing leverage, range or tempo rather than by adding plates — and you can do it anywhere.

Every exercise using:Body only

These train the abdominals too, using equipment this one does not:

Difficulty

Listed at beginner level: the pattern is simple enough to pick up without coaching, and a position that goes wrong mid-set is obvious enough to correct on the next repetition.

Of the 97 abdominals exercises in this database, 69 are listed at beginner level.

Photos: free-exercise-db — public domain (Unlicense) Full attribution →

ⓘ Informational only — not a substitute for professional fitness or medical advice.