face down (someone)
to confront someone boldly, to defy someone
We decided to face down our competitors and try to stay in business.
Best Bodyweight Exercises for a Strong Core
In and Out Crunches
Lie on back with feet together, legs extended, and hands behind head with elbows wide. Lift shoulder blades and feet off the floor, bending knees in toward chest and lifting upper body in a standard crunch.