Jack Knife -

Jack Knife

Exercise Tips

An exercise mat can be used for comfort
Control your arms- be sure you have a good grip on the kettlebell
Keep your opposite heel planted on the ground

Jack Knife

This exercise targets your abdominals and provides a low to moderate cardio benefit.

Muscle Group

Abdominals

Frequency

2 Days a Week to
3 Days a Week

Equipment

Kettlebell

Cardiovascular Benefit

Low to Moderate

Starting Position: Lie on the floor, face up with your legs fully extended and heels touching. Hold the larger part of a kettlebell in both hands and fully extend your arms behind your head, so your body is in a straight line.

1 Exhaling, crunch up, simultaneously lifting your hands and one leg off the floor, towards each other. At the peak of the motion, your shoulder blades should be off the floor and your hands and knee should be almost touching.
2 Inhale and slowly return to starting position.
3 Repeat, lifting the opposite leg this time.
4 Repeat this exercise until you have completed all repetitions for the set, alternating legs.

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Jack Knife

Exercise Tips

Jack Knife

Muscle Group

Frequency

Equipment

Cardiovascular Benefit

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