Jack Split Crunch

Jack Split Crunches begin in a lying starting position. The arms are extended backward over the head, parallel to the ground. The legs lie flat on the floor, with the gaze directed upward.

Movement execution

Initiate the exercise by exhaling as you lift your upper body and simultaneously raise your legs. The hands move through the middle of your legs toward the floor. You can execute the movement as extensively as possible. Return to the starting position while inhaling deeply. Throughout the entire exercise, ensure to keep your back straight. It is advisable to reduce the range of motion rather than risking a rounded back.

Stressed muscles and common mistakes

Additional information about the activated muscles and common mistakes during the execution of the Jack Split Crunch exercise can be found on the website dedicated to Klappmesser / Jackknife / V-Ups.

Alternative variants to Jack Split Crunch

To make your training more varied, you can also resort to similar exercises or other variations of the Jack Split Crunch.