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Low to High Plank

The low-to-high plank — often called a plank up-down — climbs from forearms to hands and back, one arm at a time, while the body fights to stay a rigid plank throughout. It layers single-arm pressing onto anti-rotation work, which is why it appears in so many honest core circuits. Coached by Maddy (NASM-CPT) — these are the exact form cues he gives on every client's first week.

Muscles worked

Abs · rectus abdominis Deep core · transverse abdominis Obliques Lower back · erector spinae Front shoulders · anterior deltoid

Sets & reps by goal

GoalSets × RepsRest
Strength4 × 4–6 full up-downs (slow)90 s – 2 min
Muscle3–4 × 8–12 up-downs60–90 s
Endurance3 × 30–45 s continuous45–60 s

Rep ranges per Helms 2014 · Schoenfeld 2016.

Level — Beginner

Beginner-listed, but clean hips through the transitions is genuinely intermediate work.

Proper form — 5 cues

  1. Start in a forearm plank: elbows under shoulders, glutes tight, one straight line.
  2. Press up onto one palm, then the other, placing each hand where its elbow was.
  3. Reverse down elbow by elbow with the same control — no collapsing.
  4. Alternate the leading arm every rep, or every round, without fail.
  5. Widen the feet to reduce hip sway; narrow them to increase the challenge.

Breathing: Exhale on each press up to the palms; never stack multiple transitions on one held breath.

The 3 mistakes Maddy corrects most

Hips swivelling with every transition. The rocking replaces trunk anti-rotation with momentum, gutting the core benefit. Fix: Slow down, widen the stance, and imagine balancing a cup of water on the sacrum.
Hand landing far ahead of the shoulder. The long reach turns each press into a strained, shoulder-heavy grind. Fix: Place the palm directly under the shoulder line — short, vertical presses.
Sagging through the lower back late in sets. The plank line quietly dies while the arms keep moving, loading the spine badly. Fix: End the set at the first sag; quality expiry is the real rep limit.

Common questions

What muscles do plank up-downs work?

Three jobs at once: the abs and deep trunk hold the plank against sagging and twisting, the shoulders and triceps perform a single-arm press on every climb, and the shoulder blades' stabilisers manage each transition. It is closer to a hybrid strength move than a plain core hold.

Why do my wrists complain during up-downs?

The top position loads extended wrists repeatedly, which untrained wrists notice fast. Spread the fingers, press through the whole palm, and keep the hand under the shoulder rather than ahead of it. Shorter sets, or performing some rounds on fists or handles, spreads the exposure while tolerance builds.

How is this different from just holding a plank?

A static plank asks the trunk to resist one constant force. Up-downs change the support base every second, so the trunk must resist a rotating, shifting force while the arms work — a harder and more transferable demand. Keep static planks for time, up-downs for dynamic control.

Related exercises

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