Low Lunge to Half Split

How to do it

Set up in a Low Lunge: right foot forward with the knee stacked over the ankle, left knee down on the mat (pad it with a blanket), hips sinking toward the floor. On the exhale, shift the hips back over the left knee and straighten the right leg, flexing the foot so the toes pull back — that's a Half Split, and the stretch moves into the right hamstring. On the inhale, glide the hips forward again, re-bending the front knee into the lunge so the stretch returns to the left hip flexor. Flow back and forth, one breath each way, hands framing the front foot or up on blocks. Then switch sides.

Why it's good for runners

This is the one wave that hits both of running's signature tight spots in a single movement: the hip flexor on the lunge, the hamstring on the half split. Most runners stretch one and forget the other; flowing between them keeps both supple and teaches the hips to move smoothly through the range a running stride actually uses. As one card with one demo, it's far easier to learn than two separate static stretches.

Common mistakes

Don't lock the front knee when you straighten into the half split — keep a micro-bend so the hamstring takes the stretch, not the joint. Don't let the hips swing sideways; the motion is hips-forward / hips-back over a stable back knee. And always pad the back knee — this is a repeated movement and an unprotected knee won't relax into it.