Core · Bodyweight

Elbow to Knee Decline Side Plank

How to do the elbow to knee decline side plank, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.

Animated demonstration of the Elbow to Knee Decline Side Plank
Equipment
Bodyweight
Difficulty
Advanced
Logged as
Reps
Movement
Flexion
Mechanic
Isolation

How to do it

Set up in a side plank with your feet raised on a bench or box (decline) and your elbow under your shoulder. Hold the position, then crunch your top elbow and top knee together, draw them in, and extend back out. Repeat for reps, then switch sides.

  1. 1Feel your obliques fire to hold the plank and crunch the knee in
  2. 2Keep your hips lifted and body stacked in line
  3. 3Drive the floor away through your supporting elbow

Common mistakes

  • Don't let your hips sag toward the floor
  • Avoid rotating your torso flat as you crunch
  • Don't rush; control the crunch in and the extension out

Muscles worked

The elbow to knee decline side plank mainly works the obliques and lower abs, with the upper abs, hip flexors, glutes, and side delts assisting.

  • ObliquesPrimary
  • Lower AbsPrimary
  • Upper AbsSupport
  • Hip FlexorsSupport
  • GlutesSupport
  • Side DeltsSupport
  • LatsMinor
  • Lower BackMinor
  • Upper TrapsMinor
  • QuadsMinor
  • HamstringsMinor
  • AdductorsMinor

Kovo programs the elbow to knee decline side plank for you and tracks it every session.

We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.

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Last reviewed June 2026.