Try this as an alternative, or in addition to, your daily plank – the Upward Plank Pose.
Begin by sitting with your legs out straight, place your hands behind your back and press your palms down against the floor with your fingertips towards you. Lift your pelvis and straighten your legs whilst driving your toes to the floor. Press your shoulder blades against your back and look up and smile !
Namaste and enjoy your day !