Ab exercises

V-up

Also known as: Relevés en V · Κοιλιακοί μαχαίρι · v ups · jackknife · jackknife sit-up

Primary
Abs
Equipment
Bodyweight
Level
Beginner
Type
Isolation
Suggested rest
45 s

How to do the V-up

  1. Lie on your back with arms extended overhead and legs straight.

  2. Lift your torso and legs at the same time, reaching your hands toward your toes.

  3. Keep your legs as straight as you can.

  4. Lower slowly back to the start without flopping down.

Sets and reps

GoalSetsRepsRest
Muscle growth2–410–1545 s
Muscular endurance2–315–2545 s

When you hit the top of the rep range on every set, add a rep or a harder variation next session.

Starting points from training research. Stop each set 1–3 reps short of failure.

Muscles worked

Primary

Abs

The abs flex your spine and stop it from arching. Mix crunching moves (crunches, leg raises) with anti-extension work (planks, rollouts).

Alternatives

Same muscles, similar movement: swap in one of these if the V-up doesn’t suit your gym or your joints.

Train smarter

Bodyweight ab exercises