Side Jackknife
How to program the Side Jackknife
Sets and reps
As a compound movement, the Side Jackknife responds well to heavier loading. For strength, work in the 3–5 sets of 4–8 reps range with 2–3 minutes of rest between sets. For muscle growth, 3–4 sets of 8–12 reps with 90 seconds of rest is the classic hypertrophy zone. Place it early in your session, when you're freshest, and leave 1–3 reps in reserve on most sets.
Progression
The Side Jackknife is beginner-friendly. Start with a load (or rep count) you can complete with clean form on every set, then add a small amount of weight or 1–2 reps each week. When you hit the top of your rep range on all sets, increase the load and drop back to the bottom of the range — simple double progression.
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Frequently asked questions
What muscles does the Side Jackknife work?
The Side Jackknife primarily targets the Abdominals.
What equipment do I need for the Side Jackknife?
You need Body Only. Difficulty level: Beginner.
How many sets and reps of the Side Jackknife should I do?
For strength, do 3–5 sets of 4–8 reps with 2–3 minutes rest. For muscle growth, do 3–4 sets of 8–12 reps with about 90 seconds rest.
