What do these have in common?

Backing out of your driveway or a parking place.

Rolling over in bed.

Getting in and out of your car.

Rising from a chair.

Sitting comfortably.

Reaching for that high shelf.

Yoga triangle pose.

Plies that don’t hurt your knees.

A strong pelvic floor.

What is it?

Your feet!

(More details coming up later.)