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Jack Knives 101 Video Tutorial

Gym Modified Variation Core Exercise

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Jack Knives
Jack Knives

Exercise Synopsis

Target Muscle Group

Abs

Secondary Targets

Execution

Compound

Force Type

Core

Required Equipment

Body Weight

Fitness Level

Intermediate

Variations

None

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

Soon to be added!

How Not to Perform

Soon to be added!

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.

EQUIPMENT

Body Weight

EXECUTION

Isolation

FITNESS LEVEL

Intermediate

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