Skip to content
Crucible Fit
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Pricing
Get Crucible
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing
  • FAQ
  • Training Guides
Get Crucible
Crucible Fit

A daily functional fitness test for iPhone, Apple Watch and Android. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App StoreGet it on Google Play

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

  1. Home
  2. /
  3. Exercises
  4. /
  5. Shoulders
  6. /
  7. Front Plank With Leg Lift

Exercise guide

Front Plank With Leg Lift

  • Intermediate
  • Compound
  • Timed hold
  • Lower arms
  • Lower legs
  • Shoulders
  • Upper arms
  • Upper legs
  • Waist

This plank variation increases core demand by reducing the base of support while integrating hip extension to target the glutes and hamstrings. It is an effective intermediate exercise for building anti-rotational stability and improving posterior chain engagement.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Front Plank With Leg Lift demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Abs
  • Obliques

Secondary

  • Biceps
  • Deltoids
  • Forearms
  • Glutes
  • Hamstrings
  • Quadriceps
  • Serratus anterior
  • Triceps

Equipment

  • Body weight

Setup

  1. Start in a forearm plank position with your elbows directly under your shoulders and forearms parallel.
  2. Extend your legs straight back with your feet hip-width apart and toes tucked.
  3. Engage your core, tuck your pelvis slightly, and squeeze your glutes to create a straight line from head to heels.

How to do it

  1. Exhale and slowly lift one leg toward the ceiling by squeezing the glute, keeping the knee locked and the hips level.
  2. Inhale as you lower the leg back to the starting position with control, avoiding any contact with the floor if possible.
  3. Alternate sides by lifting the opposite leg, maintaining a steady 2-second tempo for both the lift and the lower.
  4. Keep your head in a neutral position, looking at the floor between your forearms throughout the movement.

Form checklist

  • Keep your hips square to the floor; do not allow the pelvis to rotate as the leg lifts.
  • Maintain a flat lower back; do not let your spine arch or your hips sag toward the floor.
  • Push actively through your forearms to keep your shoulder blades spread and your chest away from the floor.
  • Ensure the movement comes from the hip (glute contraction) rather than bending the knee.

Pro tips

  • Focus on 'reaching' your heel toward the back wall as you lift to maximize hamstring and glute tension.
  • Imagine a glass of water resting on your lower back; your goal is to move your legs without spilling a drop.

Make it harder

  • Hold the leg at the peak of the lift for 2-3 seconds to increase time under tension.
  • Perform the exercise from a high plank (hands under shoulders) to increase the stability challenge for the upper body.

Frequently asked

What muscles does the front plank with leg lift work?
The front plank with leg lift primarily targets the abs and obliques, and also works the biceps, deltoids, forearms, glutes, hamstrings, quadriceps, serratus anterior, and triceps as secondary muscles.
What equipment do you need for the front plank with leg lift?
The front plank with leg lift requires no equipment — just your body weight.
Is the front plank with leg lift good for beginners?
The front plank with leg lift is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals
  • Ardha Matsyendrasana Yoga PoseIntermediate · abs, glutes, obliques, and trapezius
  • Back Steps PlankIntermediate · abs, lats, and obliques
  • Bear Walk To Rolling RockIntermediate · abs, hamstrings, obliques, and trapezius

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

Download on the App StoreGet it on Google Play

See how a Crucible works