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Coach Rudy @coachingotfInstagram
BOSU Crunch — Demonstrates a small-range crunch on a BOSU with neck support and a floor-based option.
BOSU
Watch on Instagram Opens the original post in a new tab. Instagram may ask you to sign in.
BOSU Crunch — Demonstrates a small-range crunch on a BOSU with neck support and a floor-based option.