Exercise
ALTERNATING LEG BRIDGE
Form cues
About
The Alternating Leg Bridge is a glute and hamstring exercise that adds unilateral instability to the standard glute bridge by extending one leg straight while keeping the hips elevated. The single-leg support demands greater glute medius and hip stabilizer activation than the bilateral bridge, making it an excellent intermediate step between two-leg and full single-leg glute bridges, and a useful corrective for hip drop during activities like running and hiking.
Instructions
Step-by-step technique
Lie flat and position legs
Lie on your back with your feet flat on the floor, knees bent. Extend one leg straight out at a 45-degree angle while keeping your core braced and your spine in a neutral position against the floor.
Keep knees hip-width apartDrive through the supporting heel
Initiate the movement by pressing firmly through the heel of your bent leg to lift your hips off the ground. Avoid pushing through your toes, as this shifts the load away from the intended target muscles.
Drive through the heelExtend hips to full lockout
Continue driving upward until your torso and thigh form a straight line from your shoulder to your knee. Hold this peak position for a brief second to maximize activation in the glutes and core.
Squeeze the glute hardMaintain alignment and stability
Ensure your extended leg remains parallel to the floor and does not sag during the bridge. Focus on keeping your hips level to prevent any rotation or dropping throughout the duration of the movement.
Keep hips levelLower with controlled motion
Slowly descend by lowering your hips back toward the floor under complete control. Do not allow your hips to slam down onto the mat between repetitions to maintain consistent tension on the glutes and core.
Control the descentCommon mistakes
What goes wrong — and why
Hips dropping when the leg extends
The most common failure: the hip on the extending-leg side drops, indicating weakness in the standing-leg glute. This turns the exercise from a strength drill into a compensation test.
Keep both hips level throughout. If the hip drops, the exercise has exceeded your current strength level — return to the standard two-leg bridge and build more foundation.
Using the lower back instead of the glute
Achieving hip height through lumbar hyperextension rather than glute activation shifts the load to passive spinal structures and removes the muscular training stimulus.
Initiate the bridge by squeezing the glute, not by arching the back. The ribcage stays down; height comes from hip extension, not lumbar extension.
Rushing the alternation
Rapid leg switching prevents the stabilizing glute from reaching meaningful time under tension.
Hold the single-leg position for 2–3 seconds before switching. The pause is where the exercise becomes productive.
Variations · Progressions · Regressions
Adaptations for every level
Two-Leg Glute Bridge
The standard bilateral glute bridge with feet flat on the floor. Build hip extension strength and mind-muscle connection before attempting the alternating version.
Marching Glute Bridge
Instead of extending the leg straight, raise one knee toward the chest while keeping the other leg flat. Targets hip flexor and glute interaction rather than hamstring engagement.
Single-Leg Glute Bridge
Remove the support leg entirely, performing the full bridge on one leg. Maximises unilateral glute activation and hip stability demand.