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Exercise Library

How to Do a Plank

In short

The plank has you hold a straight-body position on your forearms and toes. It trains the whole core to keep your spine stable, which protects your back and improves every other lift. It needs no equipment and scales easily for any level.

Written & reviewed by M. Thurairaj & team, Registered Physiotherapist & Certified Trainers
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The plank teaches your core to do its real job: keeping your spine solid while everything else moves. That stability protects your back when you lift, carry, or twist, which is why it earns a place in almost every program we write.

You need nothing but a bit of floor, so it fits a bedroom or our Putra Heights centre. Done well it is deceptively hard, and holding good form for thirty honest seconds beats a sloppy two minutes every time.

What it trains and who it suits

It trains the deep core, abs and glutes to resist your spine sagging. It suits everyone, from beginners building core control to lifters wanting a more stable base.

Because it is a hold with no impact, it is low-risk and easy to scale, making it a safe starting point for people with back concerns who have been cleared to train.

Step-by-step cues

  1. Set your forearms on the floor under your shoulders
  2. Extend your legs back with toes tucked under
  3. Form a straight line from head to heels
  4. Squeeze your glutes and brace your stomach hard
  5. Hold, breathing steadily, without letting the hips sag

Common mistakes and quick fixes

  • Hips sagging, squeeze the glutes and tuck the ribs down
  • Hips piking up, lower them into a straight line
  • Holding the breath, breathe steadily throughout
  • Neck craning up, look at the floor to keep it neutral

Regressions, progressions and when to stop

Too hard? Plank from your knees or with hands on a bench. Too easy? Hold longer, lift one foot, or add a reach. At home the floor is all you need; at our centre we add loaded and moving plank variations.

  • Stop if you feel sharp low-back pain rather than core effort
  • See a professional if planks always trigger back pain

Frequently Asked Questions

How long should I hold a plank?+

Quality beats duration. Two or three holds of twenty to forty seconds with perfect form is plenty. Once that is easy, progress to harder variations rather than very long holds.

Why do I feel planks in my lower back?+

Usually the hips are sagging. Squeeze your glutes, tuck your ribs down, and brace your stomach so the core, not the back, does the work.

Are planks better than sit-ups?+

For most people, yes. Planks train the core to stabilise the spine, which carries over to real life and lifting, without the repeated spinal flexion of sit-ups.

Can I do planks with a bad back?+

Often they help, but only if pain-free and cleared. Start from the knees or a bench, keep it short and braced, and see a professional for ongoing back pain.

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