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Exercise Benefits With Proper Form & Technique

Jackknife

(2.63)
through 8 votes
Human
muscles:Rectus AbdominisMuscle
required:Doable Without Equipment And Weights
optional:Fitness Mat
fitness level:Hard
exercise type:Strength
Variations available (1)
Starting PositionExecution

General And Specifics

Starting Position

  • lay down onto the ground or a mat evenly
  • your arms are fully stretched behind your head
  • get your feet together

Correct Execution

  • brace your abs
  • lift your stretched arms, legs and your upper body as high as possible
  • avoid curling your back, otherwise your lumbar spine can be strained too much
  • let your limbs and upper body sink down again slowly
  • repeat the exercise