Jack Knives 101 Video Tutorial
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Exercise Synopsis
Target Muscle Group
Abs
Secondary Targets
Execution
Compound
Force Type
Core
Required Equipment
Body Weight
Fitness Level
Intermediate
Variations
None
Alternatives
Timer
Hour
Minute
Second
Stopwatch
00:00:00:00
Overview
Jack knives are an abdominal exercise that targets the rectus abdominis, or six-pack muscles. To do a jack knife, lie on your back with your knees bent and your feet flat on the floor. Place your hands behind your head and extend your legs straight up in the air. Slowly lower your legs until they are just above the floor, then raise them back up. Repeat this for 10-12 repetitions.
How to Perform
Soon to be added!
Tips
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How Not to Perform
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Variations
Variations of fitness exercises refer to different ways of performing a specific exercise or movement to target various muscle groups, intensities, or goals. These variations aim to challenge the body differently, prevent plateaus, and cater to individuals with varying fitness levels.
Alternatives
Alternative exercises in fitness refer to different movements or activities that target similar muscle groups or serve the same training purpose as the primary exercise. These alternative exercises can be used as substitutes when the original exercise is unavailable or challenging to perform due to various reasons such as equipment limitations, injuries, or personal preferences.
