Flex

Bird Dogs

Muscles worked

Technique

Setup

Start on hands and knees, wrists under shoulders, knees under hips, back flat.

Movement

Extend your right arm forward and left leg back until both are level with your torso. Pause, return, switch sides.

Form Tip

Imagine balancing a glass of water on your lower back — no tilting or rotating.

Increase Difficulty

Add a 3-second hold or touch elbow to knee under your body between reps.

Decrease Difficulty

Extend only the leg, keeping both hands down.

Hear the cue

The trainer's spoken setup and form tip for this exercise — the same clips Flex plays in a session.

Setup · male voice
Form tip · male voice
Setup · female voice
Form tip · female voice