A certified trainer with 20 years of experience says these are her two favorite standing core moves for building stability and balance

Woman in a white vest and grey shorts against an orange background performing a single leg balance side on to the camera.

Strengthening your core muscles can improve everything from your posture to your running speed and your ability to lift heavy things.

There are plenty of floor-based moves that you can do to target your mid-body muscles, from classics like sit-ups to beginner-friendly moves like the bird dog.