Plank
How to do the plank
- 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.
- 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.
Muscles worked
The prime movers are the rectus abdominis and the obliques, which flex the trunk forward and resist it being pulled into extension or twisted out of line.
Every exercise for:Abdominals
How this movement works
You get into position and hold. One joint sets the angle and one muscle group takes the tension, so the load stays exactly where you put it. Hold for time, breathe normally, and come out the moment the position drifts: a shape that has quietly shifted is no longer training what you set it up to train.
It is filed under strength: produce force against resistance for a countable number of repetitions, and progress the resistance over time.
What you need
No equipment at all. The resistance is your own bodyweight, so you progress by changing leverage, range or tempo rather than by adding plates — and you can do it anywhere.
Every exercise using:Body only
These train the abdominals too, using equipment this one does not:
- Press Sit-Upbarbell
- Rope Crunchcable
- Side Bend with Dumbbelldumbbell
- Smith Machine Hip Raisemachine
- Supine One-Arm Overhead Throwmedicine ball
Difficulty
Listed at beginner level: the pattern is simple enough to pick up without coaching, and a position that goes wrong mid-set is obvious enough to correct on the next repetition.
Of the 97 abdominals exercises in this database, 69 are listed at beginner level.
Photos: free-exercise-db — public domain (Unlicense) Full attribution →
ⓘ Informational only — not a substitute for professional fitness or medical advice.