How Long Should You Hold a Plank? A Coach's Straight Answer
Hold a plank for as long as you can keep perfect position, then stop. For most people that is 20 to 45 seconds, and three to four of those holds with a short rest is a better session than one long, shaking minute and a half. Once you can do three clean holds of 45 to 60 seconds, there is little to gain from going longer. Make the plank harder instead, with a lever change, a tighter brace or a different variation. The plank is a useful teaching tool for bracing your trunk. It is not a contest, and holding one for five minutes says more about patience than strength.
What a plank is actually training
A plank trains your trunk to resist movement. Your body wants to sag at the hips under gravity, and the muscles around your abdomen, hips and back work together to stop that. This is the same job they do when you carry heavy shopping, squat with a barbell on your back or push a pram up Highgate Hill. It is called anti-extension: preventing your lower back from arching.
That framing matters for the time question. The plank is valuable because it teaches you to create tension and hold position while breathing. Once you can do that reliably, longer holds mostly train your tolerance for discomfort in one fixed shape. Useful, perhaps, for a very particular sport. For everyone else, the skill transfers better when you load it harder or use it in other positions.
A good plank, step by step
- Forearms on the floor, elbows under shoulders, hands relaxed or loosely together.
- Legs straight behind you, feet hip width or slightly closer.
- Squeeze your glutes as if bracing for a light push, and tuck your pelvis very slightly so your lower back is flat rather than arched.
- Push the floor away with your forearms so your upper back is not sagging between your shoulder blades.
- Brace your midsection as if someone is about to prod your stomach. Then breathe, short breaths behind the brace.
- Keep your head in line with your body. Look at the floor a little ahead of your hands.
Done this way, most people find 20 to 30 seconds surprisingly hard. That is the point. If you have been holding planks for two minutes, try this version and see where you land. Our guide to bracing your core when lifting explains the bracing and breathing in more detail.
Signs the set is over
- Your hips start to drop, or rise into a pike to escape the work.
- You feel it in your lower back rather than your stomach and glutes.
- You start holding your breath to stay up.
- Your shoulders creep towards your ears.
- Shaking turns into wobbling out of position.
Any of these means the useful part of the set is finished. Stop, rest, and go again. Counting seconds after your form has gone simply rehearses the wrong position.
How long to hold, by level
| Level | Version | Hold | Sets |
|---|---|---|---|
| Starting out | Plank on knees, or hands on a bench | 15 to 20 seconds | 3 |
| Building | Full forearm plank | 20 to 40 seconds | 3 to 4 |
| Solid | Full plank, maximum tension | 30 to 45 seconds | 3 |
| Ready to progress | Harder variation (see below) | 10 to 30 seconds | 3 |
Rest 30 to 60 seconds between holds. Add five seconds a week, or one set, until you reach the top of your range, then move to a harder version rather than a longer hold.
Making it harder without making it longer
- The hard-style plank. Everything above, but squeezing as hard as you can: fists clenched, elbows pulled towards toes, glutes and thighs locked. Ten seconds is plenty. Repeat five times.
- Longer lever. Move your elbows a few centimetres further forward than your shoulders. Small change, big difference.
- Fewer points of contact. Lift one foot, or reach one arm forward, without the hips twisting.
- Plank with a body saw. Rock slowly forward and back on your forearms a few centimetres.
- Ab wheel rollout. The same anti-extension job, moving. Start with short ranges from your knees.
Where planks fit in a programme
The plank is one pattern among several. A balanced trunk programme also trains resisting rotation and side bending, and includes some loaded carrying. A sensible approach is three or four short sets of a plank variation at the end of a strength session, twice a week, alongside other trunk exercises. If you want a broader plan, our core workout without crunches sets out a full trunk session, and the dead bug is an excellent partner exercise that teaches the same control lying on your back.
One expectation to correct: planks will not flatten your stomach on their own. They strengthen the muscles underneath. Visible change at the waist comes from lower body fat overall.
Who should be careful
Planks put pressure through the abdomen and raise blood pressure briefly, especially if you hold your breath. Check with your GP or physiotherapist first if you are pregnant or recently postnatal, have diastasis recti or a hernia, have high blood pressure or a heart condition, or have a shoulder or wrist injury. A side plank, a plank on a bench or a dead bug is often a better starting point in those cases.
Common mistakes
- Hips too high, which turns it into a rest position.
- Lower back sagging, which loads the spine instead of the abdomen.
- Elbows too far back, under the chest, which makes it easier than it looks.
- Scrolling a phone on the floor during the hold.
How we use planks in the studio
In a private session, a plank is mostly a diagnostic: thirty seconds tells me a lot about how someone braces, breathes and controls their pelvis. From there we pick the trunk work that suits you and build it into lifts like squats and carries, where it matters most. Read more about how 1-1 personal training in Highgate works at The Highgate House.
Questions we get asked
Is a two minute plank good?
It shows decent endurance, but a harder 30 second variation will usually build more useful strength. Past a minute, change the exercise rather than the clock.
Should I do planks every day?
You can, but two or three times a week as part of strength training is enough for most people.
Why does my lower back hurt during planks?
Usually your hips are sagging. Squeeze your glutes, tuck your pelvis slightly and shorten the hold. If pain persists, stop and get it assessed.
Are side planks better than front planks?
Neither is better. They train different directions of control. Use both.
For coaching on trunk strength and the lifts it supports, see our private personal training studio.
Book with The Highgate House
Ready to start training properly? Email us at [email protected] with the service and the day that suits you, and we will come back to you with times.
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