Bodyweight

Elevated Jackknife Crunch

Elevated Jackknife Crunch is a potent abdominal exercise for strong, defined abs. It involves an intensified crunch with elevated legs, targeting your core muscles and enhancing balance.
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Elevated Jackknife Crunch instructions
Step-by-step instructions
1
Start by placing an exercise or yoga mat on the floor. Lay a step or bench perpendicular to the mat, towards the one end.
2
Lie down on your back on the mat. Place your heels on the bench or step, with your legs straight and your toes pointing towards the ceiling.
3
Place your hands lightly behind your ears, keeping your elbows wide apart.
4
Lift your head and shoulders off the mat and try to reach towards your toes, while keeping your back flat on the floor.
5
Lower yourself back down and repeat for the desired number of repetitions.
Start by placing an exercise or yoga mat on the floor. Lay a step or bench perpendicular to the mat, towards the one end.
Lie down on your back on the mat. Place your heels on the bench or step, with your legs straight and your toes pointing towards the ceiling.
Place your hands lightly behind your ears, keeping your elbows wide apart.
Lift your head and shoulders off the mat and try to reach towards your toes, while keeping your back flat on the floor.
Lower yourself back down and repeat for the desired number of repetitions.
Equipment needed
Bands
Barbell
Battle Ropes
Bench
Bosu
Box
Cables
Dip Bar
Dumbbell
EZ Curl Bar
Hex Bar
Kettlebell
Ladder
Machine
Pull-Up Bar
Yoga Ball
Muscles used
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Back
Front
Strength distributions
This graph shows how much weight men and women could lift for a single maximum-effort rep.
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