Supine Hamstring Stretch (Supta Padangusthasana)

You let the bottom leg bend or the opposite hip lift, which cheats the stretch out of its anchor.

You yank the strap hand-over-hand so the shoulders and neck end up doing the work.

You lock the top knee ramrod straight and feel the pull behind the knee instead of in the muscle belly.

You let the lifted leg drift out to the side instead of tracking straight over the hip.

Press the down leg actively into the mat — it deepens the top-leg stretch more than pulling harder does.

A slightly bent knee drawn closer beats a locked knee held farther away.

Keep the arms long and let the strap do the holding while you breathe into the back of the thigh.