Side Jackknife
How to do the Side Jackknife with correct form, the muscles it works, and where it fits a training plan you actually stick to.
Abs
,
Body Only
Log it, see it on your body.
Every Side Jackknife set you log feeds Ascend's anatomy heatmap, so your abs volume is visible at a glance, and counts toward your bodyweight-strength tier.
Where the Side Jackknife fits
The Side Jackknife shows up in training built around a specific goal. See how it fits:
More abs exercises
Side Jackknife: common questions
What muscles does the Side Jackknife work?
The Side Jackknife primarily works the Abs.
Is the Side Jackknife suitable for beginners?
Yes. The Side Jackknife is a beginner-level exercise, so it's a solid choice if you're new to training. Start light and focus on the movement pattern before adding load.
What equipment do I need for the Side Jackknife?
None. The Side Jackknife is a bodyweight exercise, so you can do it without any equipment.
Is the Side Jackknife a compound or isolation exercise?
The Side Jackknife is a compound exercise, it moves multiple joints and works several muscle groups at once, which makes it efficient for building overall strength.
Log your Side Jackknife sets, free.
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