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JackKnife

Body weight
Exercise atlas

Step by step

How to perform

  1. Engage your abdominal muscles to simultaneously lift your upper body and lower body, bending at the waist as you bring your arms forward to meet your legs in a 'jackknife' position.
  2. Try to touch your toes or ankles with your hands at the peak of the movement, keeping your legs and arms as straight as possible.
  3. Slowly lower your body back down to the starting position, keeping your abs engaged throughout the movement.
  4. Repeat this exercise for the desired number of repetitions, ensuring to maintain proper form throughout.

Overview

About this exercise

The JackKnife exercise is a dynamic full-body workout that primarily targets the core, improving strength, flexibility, and balance. It's suitable for individuals at all fitness levels, from beginners to advanced, who are looking to enhance their abdominal strength and overall body coordination. People would want to do this exercise as it not only helps in toning the body but also aids in enhancing cardiovascular health and boosting metabolism.

Coaching cues

Form tips

Engage Your Core

The key to performing the JackKnife exercise safely is to engage your core muscles. This will protect your lower back from strain and will also help to increase the effectiveness of the exercise. A common mistake is not engaging the core properly, which can lead to back pain or injury.

Controlled Movement

When performing the JackKnife, it's important to maintain a slow and controlled movement. Avoid rushing the movement or using momentum to lift your body, as this can lead to injury and won't effectively target the muscles.

Breathe Properly

Remember to breathe in as you lower your body and breathe out as you lift your body.