About this exercise
A seated core exercise on a chair where the legs move in and out diagonally, targeting the abdominals and obliques. The alternating diagonal pattern increases the range of motion and engages the entire midsection.
Diagonal In-Out on Chair
Step by step instructions, muscle activation and variants for the Diagonal In-Out on Chair.
EasyAbs
How to Perform
- Sit on the edge of a chair, gripping the sides of the seat for support, with your back slightly reclined
- Lift both feet off the floor and bring your knees in toward your chest (the "in" position)
- Extend your legs diagonally outward to one side (the "out" position), keeping them elevated
- Bring them back in, then extend to the other side in the opposite diagonal
- Continue alternating sides in a controlled rhythm for the desired repetitions
Muscle Activation
Primary
Abs
Secondary
CoreObliques
Common Mistakes
Common mistakes content is coming soon.
About the Diagonal In-Out on Chair
The Diagonal In-Out on Chair is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.
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