ExercisesSide plank

Side plank

On one forearm, stack your feet and lift your hips into a straight line. Drop to your knee to make it easier.

CoreNo equipmentDifficulty 2 of 3
Two-panel demonstration of the side plank, showing the start and finish positions
Start and finish positions

How to do it

On one forearm, stack your feet and lift your hips into a straight line. Drop to your knee to make it easier.

Muscles worked

Front
Back
  • obliquesprimary
  • core

Hover a muscle to find it on the figure. Dark green is the primary mover, lighter green is supporting work.

How many sets should you do?

That depends on your goal, your ability, and how many days you train. Answer three questions and the builder works out your sets and reps, plus a full week around them.

Get my sets and reps
JM
Johnny Milaychev · Product manager and self-directed lifter, not a trainer or a clinician. Why that matters and where this guidance stops.
Reviewed 16 August 2026 · Exercise library v2.2