Suspension Twisting Jack knife

Suspension Twisting Jack knife

The Suspension Twisting Jack knife is a challenging and dynamic exercise that targets multiple muscle groups in your core and upper body. This exercise is performed using suspension straps, such as TRX or other similar equipment, which adds an element of instability and requires stabilization throughout the movement. The primary muscles engaged during a Suspension Twisting Jack knife include the rectus abdominis (six-pack muscles), obliques, hip flexors, and shoulders. By incorporating twisting and jack knife movements, this exercise activates deep core muscles, improves core stability, and enhances overall strength and coordination. In addition to its core-strengthening benefits, the Suspension Twisting Jack knife requires upper body strength, particularly in the shoulders, chest, and triceps. The instability aspect of the exercise forces you to engage your muscles more effectively, leading to improved overall balance and proprioception. As with any exercise, it's important to maintain proper form and start with a level of difficulty that matches your fitness level. Gradually progress as you become comfortable with the movement and ensure you have a solid foundation of core strength before attempting more advanced variations. Incorporating the Suspension Twisting Jack knife into your fitness routine can add variety and challenge to your workouts. Remember to always warm up before exercising, listen to your body, and modify or seek assistance if needed. Push yourself, but respect your limits to avoid injury and maximize the benefits of this exercise.


  • Start by attaching suspension straps to a sturdy anchor point above shoulder height.
  • Grab the handles of the suspension straps and face away from the anchor point.
  • Step forward, leaning your upper body forward while extending your arms out in front of you until they are fully extended.
  • Lift both feet off the ground, bringing your knees towards your chest as you curl your torso forward.
  • At the same time, rotate your torso to one side, bringing your opposite shoulder towards the opposite knee.
  • Pause for a moment at the peak of the movement, engaging your core muscles.
  • Slowly reverse the motion, extending your legs and torso back to the starting position.
  • Repeat the exercise, alternating sides with each repetition.

Tips & Tricks

  • Focus on proper form and technique to ensure maximum effectiveness and minimize the risk of injury.
  • Engage your core muscles throughout the entire exercise to stabilize your body and enhance the movement.
  • Control the speed of the movement to maintain tension in your muscles, rather than relying on momentum.
  • Keep your breathing steady and consistent throughout the exercise to optimize oxygen flow and support your performance.
  • Gradually increase the intensity and difficulty of the exercise as you progress to continually challenge your body.
  • Listen to your body and take breaks when needed to avoid overexertion and prevent muscle fatigue.
  • Incorporate other core-strengthening exercises into your routine, such as planks and Russian twists, to enhance the overall effectiveness of your workout.
  • Pay attention to your diet and ensure you're fueling your body with a balanced mix of nutrients to support muscle growth and recovery.
  • Stay hydrated before, during, and after your workout to maintain optimal performance and prevent dehydration.
  • Consistency is key – try to incorporate this exercise into your routine regularly, aiming for at least 2-3 times per week.


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