Exercise library · Core

Sit-Up.

Full sit-up that trains the abs through a complete trunk flexion.

Also known as: Full Sit Up

BeginnerBodyweight
The numbers
Sets
3–4
Reps
8–15
Rest
45–75 s
The play-by-play

How to do it.

  1. Step 01

    Lie on the back with knees bent, feet flat

  2. Step 02

    Cross the arms or place hands by the head

  3. Step 03

    Curl the torso up toward the knees

  4. Step 04

    Keep the movement smooth

  5. Step 05

    Lower back down under control

  6. Step 06

    Repeat for reps

What separates good from great

Pro cues.

  • Avoid yanking on the neck

  • Exhale on the way up

  • Control the descent

Common questions

Questions, answered.

What is the Sit-Up?
Full sit-up that trains the abs through a complete trunk flexion.
What muscles does the Sit-Up work?
The Sit-Up primarily works your rectus abdominis. It also recruits your hip flexors as secondary movers.
What equipment do I need for the Sit-Up?
None. The Sit-Up is a bodyweight movement you can do without any equipment.
How many sets and reps should I do for the Sit-Up?
A typical prescription for the Sit-Up is 3–4 sets of 8–15 reps. Rest about 45–75 seconds between sets.
Is the Sit-Up good for beginners?
Yes. The Sit-Up is a beginner-friendly movement, so it is a good choice when you are starting out, as long as you keep the load light and focus on form.

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