Butterfly Groin Stretch

What is the Butterfly Groin Stretch?

The butterfly stretch opens the inner thighs and groin by bringing the soles of the feet together and letting the knees fall open. It is the classic seated adductor stretch — the tissue most people neglect — and it improves the hip abduction range that wide-stance squats, sumo deadlifts, and lateral movement all depend on.

Muscles worked

Primary — Adductors

The adductors of the inner thigh and groin are lengthened as the hips open and the knees fall out to the sides.

How to perform the Butterfly Groin Stretch

1. Sit tall on the floor and bring the soles of the feet together, letting the knees fall open toward the floor.
2. Hold the ankles and sit up straight, drawing the heels in toward the body to increase the stretch across the inner thighs.
3. To go deeper, hinge forward gently from the hips with a long spine rather than pushing the knees down with the hands.
4. Feel the stretch through the groin and inner thighs, hold for time, and avoid bouncing the knees.

Suggested working range: 20–45 reps. Default progression: manual.

Mechanics

A static hip-abduction and external-rotation stretch: pressing the soles together and letting the knees drop opens both hips symmetrically, targeting the adductors. Sitting tall and hinging forward from the hips deepens it without rounding the lower back.

Form cues

• •Sit tall and draw the heels in toward the body rather than slumping the spine.
• •Let the knees settle open under their own weight instead of forcing them down.
• •To deepen it, hinge forward from the hips with a long spine.

Common mistakes

• •Rounding the back to fold forward instead of hinging from the hips with a long spine.
• •Bouncing the knees toward the floor rather than letting them settle open under their own weight.
• •Forcing the knees down with the hands, which strains the inner thigh instead of stretching it.

Variations & alternatives

• •Seated straddle — legs open wide and straight, biasing the adductors along their length.
• •Lying butterfly — done on the back so the hips relax fully with no balance demand.
• •Side-lying groin stretch — isolates one adductor at a time for a stronger stretch.

Hip Adduction Machine

Adductors · Machine

Copenhagen Plank

Adductors · Bodyweight

Cable Hip Adduction

Adductors · Cable

Banded Hip Adduction

Adductors · Machine

Push-Up

Chest · Bodyweight

Programming: sets, reps & when to use it

Hold 20–45 seconds for one to three rounds, easing forward from the hips on each exhale. Use it in a lower-body warm-up before wide-stance work, or as a cool-down. As mobility work it earns no hypertrophy or rank credit — it opens the hips and groin, it does not build the adductors.

Frequently asked questions