Exercise
Plank: How to Do It, Muscles Worked
The Plank is a beginner-level strength exercise that primarily works the abdominals. It uses no equipment, and is performed in 2 steps, following the form cues, common mistakes and sets/reps guidance below.
What muscles does the Plank work?
The Plank primarily targets the abdominals, with no listed secondary muscles in the dataset. It's classified as a beginner-level strength movement using no equipment.
What are the most common Plank mistakes?
- Letting the lower back arch off the floor or lose its brace during the movement.
- Using momentum to swing through reps instead of moving under control.
- Holding the breath entirely instead of breathing in a controlled way through the brace.
- Pulling on the neck with the hands instead of driving the movement from the abs.
How should I program the Plank — sets, reps and frequency?
As a core-stability exercise, it is usually programmed by 30-60 second holds, or 10-20 controlled reps, for 2-3 sets. It tolerates higher frequency than a heavy compound lift — twice a week for the same muscle group is common. Add difficulty gradually — more load, more distance/time, or better technique — rather than rushing intensity.
What are good Plank variations and alternatives?
- Bent-Knee Hip Raise — bodyweight, beginner level, abdominals
- Crunches — bodyweight, beginner level, abdominals
- Hanging Leg Raise — bodyweight, expert level, abdominals
- Oblique Crunches — bodyweight, beginner level, abdominals
| Attribute | Value |
|---|---|
| Level | Beginner |
| Equipment | Bodyweight |
| Category | Strength |
| Primary muscles | Abdominals |
| Secondary muscles | — |
How to do the Plank, step by step:
- Step 1. Get into a prone position on the floor, supporting your weight on your toes and your forearms. Your arms are bent and directly below the shoulder.
- Step 2. Keep your body straight at all times, and hold this position as long as possible. To increase difficulty, an arm or leg can be raised.
Key takeaways
- The Plank is a beginner-level strength exercise using no equipment.
- Primary muscles worked: Abdominals.
- A typical working range is 30-60 second holds, or 10-20 controlled reps, for 2-3 sets.
- The most common technical fault is letting the lower back arch off the floor or lose its brace during the movement.
Log the Plank in your next workout
Try IRONSLOG freeFrequently asked questions
Is the Plank suitable for beginners?
Yes — the dataset lists the Plank as a beginner-level movement, though anyone new to training should still start with light weight (or no added weight) to learn the pattern first.
What equipment do I need for the Plank?
None — the Plank uses bodyweight only.
What's the difference between the primary and secondary muscles listed?
Primary muscles (Abdominals) do most of the work and are usually the limiting factor in the set. Secondary muscles assist or stabilize but aren't the main driver of the movement.