US Patent 8936539 Balance board exercise apparatus

A fitness apparatus for exercising with stretchable and resilient resistance bands includes a body member having a base and a rocker portion extending away from the base, the rocker portion having a generally convex configuration. The fitness apparatus includes a lid member having a generally planar configuration removably coupled to the body member. The lid member defines a pair of oppositely disposed lid member channels configured to receive the resistance bands therethrough for repositionable use in exercise by a user.